ADSS vs OPGW Fibre Optic Cable

ADSS vs OPGW Fibre Optic Cable is an important comparison when engineers design communications infrastructure along electricity networks. Both technologies carry optical fibre across overhead utility routes. However, they perform fundamentally different roles within the electrical infrastructure.

ADSS stands for All-Dielectric Self-Supporting. It provides a dedicated, non-metallic and self-supporting optical communications cable. OPGW, by contrast, stands for Optical Ground Wire. It combines optical fibres with the metallic overhead ground-wire function of an electricity transmission system.

Therefore, engineers should not view the decision simply as a choice between two types of aerial fibre cable. Instead, they should first determine what function the cable needs to perform within the electricity and communications networks.

The RapidConnect® A-Series™ ADSS Fibre Optic Cable Authority Hub provides the central technical resource for ADSS construction, span selection, aerial infrastructure applications and the A100, A250 and A500 platforms.

This comparison explains the structural, electrical, mechanical and installation differences between ADSS and OPGW. More importantly, it explains where each technology fits within modern utility communications infrastructure.

What Is ADSS Fibre Optic Cable?

ADSS is an aerial optical fibre cable that supports itself between suitable poles or structures.

Most importantly, ADSS contains no metallic structural components. Instead, dielectric materials such as aramid yarn and FRP provide the mechanical capability required for aerial deployment.

Consequently, ADSS carries communications traffic without performing an electrical conductor, shielding or grounding function.

Its construction generally combines:

• optical fibres;
• PBT loose tubes;
• non-metallic structural components;
• aramid tensile reinforcement;
• water-blocking materials; and
• an outdoor polymeric jacket.

Therefore, ADSS combines optical transmission and mechanical support within one dedicated communications cable.

If you are new to this architecture, our introductory guide explains what ADSS fibre optic cable is, including how all-dielectric and self-supporting construction differentiates ADSS from other aerial cable systems.

What Is OPGW Fibre Optic Cable?

OPGW stands for Optical Ground Wire.

Unlike ADSS, OPGW does not function solely as a communications cable. Instead, it combines optical fibre with the metallic overhead ground-wire function of a power transmission system.

Therefore, OPGW performs two important functions:

• it carries optical communications; and
• it provides an electrically conductive overhead ground-wire path.

Typically, utilities position an overhead ground wire near the top of transmission structures. From this position, the wire contributes to the electrical protection architecture of the transmission system.

OPGW incorporates optical fibres into that ground-wire structure.

Consequently, the optical network becomes integrated with an electrical infrastructure component that the transmission system already requires.

That dual role creates the fundamental difference between ADSS and OPGW.

ADSS vs OPGW Fibre Optic Cable: The Fundamental Difference

The simplest way to compare ADSS and OPGW is to ask one question:

Does the fibre cable also need to perform an overhead ground-wire function?

If the answer is yes, OPGW may provide the appropriate architecture.

If the answer is no, ADSS may provide a more appropriate dedicated communications solution.

In simple terms:

ADSS = self-supporting optical communications cable

OPGW = optical communications + metallic overhead ground wire

Therefore, the difference extends far beyond cable construction.

It affects:

• electrical function;
• cable location;
• installation;
• supporting hardware;
• structural requirements;
• electrical design;
• maintenance; and
• network integration.

For this reason, neither technology should automatically be considered superior.

Instead, each solves a different infrastructure problem.

ADSS vs OPGW at a Glance

Engineering Consideration	ADSS	OPGW
Full name	All-Dielectric Self-Supporting	Optical Ground Wire
Carries optical communications	Yes	Yes
Metallic construction	No	Yes
Ground-wire function	No	Yes
Self-supporting	Yes	Yes
Electrically conductive	No	Yes
Primary role	Dedicated communications cable	Communications plus ground wire
Typical location	Separate attachment position	Ground-wire position
Electrical integration	Communications infrastructure	Part of electrical protection infrastructure
Brownfield communications upgrades	Often particularly relevant	Depends strongly on transmission architecture
Electrical-field assessment	Important	Different electrical design applies
Mechanical engineering	Required	Required

This table highlights the principal distinction. However, each point deserves further consideration before engineers select a system.

Why ADSS Uses All-Dielectric Construction

The words All-Dielectric identify one of the defining characteristics of ADSS.

Instead of metallic armour, steel messenger wire or conductive strength members, ADSS uses dielectric components to achieve mechanical strength.

For example, aramid yarn can provide significant tensile capability without introducing metal into the cable.

Likewise, FRP can provide non-metallic structural support within the cable core.

As a result, the cable remains electrically non-conductive.

This architecture allows the optical communications system to remain separate from the electrical grounding function of the power infrastructure.

Consequently, ADSS can provide a practical solution when a utility needs fibre communications but does not need the new fibre cable to replace or perform the role of an overhead ground wire.

Why OPGW Uses Metallic Construction

OPGW has a fundamentally different purpose.

Because it must function as an overhead ground wire, conductive metallic components form an essential part of its design.

Therefore, the metal does much more than provide mechanical reinforcement.

It forms part of the cable’s electrical function.

At the same time, the OPGW construction protects optical fibres within the ground-wire system.

Consequently, designers must consider both electrical and communications performance.

This combination makes OPGW particularly relevant to transmission infrastructure where the network already requires a ground or shield wire.

ADSS Is Dedicated Communications Infrastructure

ADSS exists primarily to carry optical communications.

Although it may share pole infrastructure with electricity networks, it does not replace the electrical ground wire.

Consequently, ADSS can support applications including:

• utility telecommunications;
• SCADA connectivity;
• protection and control communications;
• network monitoring;
• industrial communications;
• regional telecommunications;
• renewable energy communications; and
• other aerial fibre networks.

This separation can provide valuable flexibility because engineers can design the optical communications route without making the fibre cable part of the ground-wire system.

OPGW Combines Electrical and Communications Functions

OPGW performs a broader infrastructure role.

Its optical fibres carry communications traffic. Meanwhile, its metallic construction performs the overhead ground-wire function required by the electricity network.

Therefore, engineers must integrate OPGW more closely into the transmission system.

Electrical, mechanical, structural and telecommunications requirements all influence the final cable specification.

Consequently, OPGW often forms part of a wider transmission-line design rather than a standalone telecommunications decision.

Where Is ADSS Typically Installed?

ADSS generally occupies a dedicated attachment position on suitable poles or structures.

Therefore, engineers can select its position according to the electrical, structural and clearance requirements of the route.

However, that flexibility does not mean installers can attach ADSS anywhere on a pole.

Instead, project designers should consider:

• existing electricity conductors;
• electrical clearances;
• electric-field exposure;
• other communications infrastructure;
• pole geometry;
• structural capacity;
• cable sag;
• cable tension;
• attachment hardware; and
• future maintenance access.

Consequently, ADSS attachment position forms an important part of aerial route design.

Where Is OPGW Typically Installed?

OPGW normally occupies the overhead ground-wire or shield-wire position of the transmission infrastructure.

Therefore, utilities generally place it above the phase conductors.

This position allows the cable to perform its electrical protection role while simultaneously providing optical communications.

Consequently, engineers cannot treat OPGW as a communications cable that they can simply attach wherever convenient.

Its position forms part of the transmission-line design.

Can ADSS Replace OPGW?

Not if the OPGW must perform the overhead ground-wire function.

ADSS does not provide that electrical function.

Therefore, replacing OPGW with ADSS without separately addressing the required electrical protection system would fundamentally change the transmission infrastructure.

However, a different situation arises when a utility only needs to add a new optical communications path.

In that case, ADSS may provide a practical alternative architecture if the existing structures, clearances, electrical environment and mechanical conditions support it.

Therefore, the better question is not:

“Can ADSS replace OPGW?”

Instead, ask:

“Does this project require communications only, or communications plus an overhead ground-wire function?”

That distinction immediately clarifies much of the design decision.

Can OPGW Replace ADSS?

OPGW certainly carries optical communications.

However, that capability does not automatically make it a logical substitute for ADSS.

If the project only requires a dedicated communications cable, OPGW introduces an additional electrical function that the project may not require.

Furthermore, the network needs to accommodate OPGW within the ground-wire position and transmission architecture.

Therefore, engineers should select OPGW because the electrical infrastructure requires or benefits from its combined role, not simply because it contains optical fibre.

ADSS vs OPGW for Existing Networks

Brownfield networks often create one of the strongest cases for considering ADSS.

For example, a utility may already have:

• poles;
• conductors;
• electrical protection infrastructure; and
• established rights-of-way.

However, the network may require additional fibre capacity.

Replacing existing ground-wire infrastructure with OPGW can involve significant transmission-network considerations.

By contrast, ADSS may allow the utility to add a separate communications cable where suitable attachment positions and structural capacity exist.

Consequently, ADSS can provide considerable flexibility for appropriate communications upgrades.

Nevertheless, engineers still need to assess the existing infrastructure carefully.

Existing Poles Do Not Automatically Make ADSS Suitable

The availability of an existing pole route does not guarantee that it can support additional ADSS.

Engineers should still consider:

• pole condition;
• available attachment positions;
• existing loads;
• span lengths;
• route geometry;
• wind loading;
• electrical clearances; and
• hardware requirements.

Furthermore, existing infrastructure may already operate near particular structural or clearance limits.

Therefore, a proper assessment should precede cable selection.

Our guide to ADSS fibre optic cable for pole-to-pole installations explains these installation factors in greater depth.

ADSS vs OPGW for New Infrastructure

Greenfield projects provide greater design flexibility.

Therefore, electrical and telecommunications designers can assess communications requirements during the initial infrastructure design.

If a new transmission line already requires an overhead ground wire and also requires fibre communications, OPGW can integrate both requirements efficiently.

Conversely, the project may benefit from keeping the communications system functionally separate from the ground-wire architecture.

In that case, ADSS may deserve consideration.

Therefore, early coordination between electrical, structural and telecommunications disciplines can help identify the most appropriate solution.

OPGW Can Make Strong Engineering Sense in New Transmission Systems

Suppose a new transmission system already requires a shield or ground wire.

If the project also requires optical communications, installing OPGW can combine the two functions in one infrastructure element.

Consequently, the project avoids installing a conventional ground wire and then adding a completely separate optical cable solely for communications.

In that context, OPGW can provide an elegant engineering solution.

However, that advantage comes specifically from its combined function.

It does not mean OPGW provides the best architecture for every aerial fibre route.

ADSS Can Make Strong Engineering Sense for Fibre Overlays

Now consider a different project.

An existing utility pole route already performs its electrical functions satisfactorily. However, the organisation needs additional communications capacity.

In this situation, engineers may not need to modify the overhead ground-wire architecture at all.

Instead, they can assess whether ADSS can provide the required communications route.

Consequently, ADSS can work particularly well as a communications overlay on suitable existing infrastructure.

This distinction between integrated electrical infrastructure and dedicated communications infrastructure lies at the heart of the ADSS vs OPGW comparison.

ADSS vs OPGW Electrical Conductivity

Electrical conductivity creates another major distinction.

OPGW deliberately conducts electricity.

ADSS deliberately avoids conductive metallic components.

Therefore, each technology interacts with the electrical network differently.

With OPGW, conductivity forms part of the required system function.

With ADSS, the dielectric architecture separates the communications cable from the metallic grounding system.

However, dielectric construction does not make ADSS immune to all electrical effects.

Does All-Dielectric Mean Electrically Unaffected?

No.

This misconception can create poor ADSS specifications.

Although ADSS does not contain conductive metallic components, the electrical field around high-voltage infrastructure can still influence the cable sheath.

Under suitable environmental and electrical conditions, surface leakage current can contribute to dry-band arcing and electrical tracking.

Therefore, ADSS design may need to consider:

• system voltage;
• attachment location;
• electrical-field strength;
• environmental contamination;
• moisture;
• cable sheath material; and
• tracking resistance.

Consequently, engineers should distinguish between electrical conductivity and electrical-environment exposure.

ADSS avoids the first. However, designers may still need to engineer for the second.

What Is an Anti-Tracking ADSS Jacket?

An anti-tracking jacket uses a sheath compound developed for applications where the electrical environment can create a greater risk of surface tracking.

Therefore, appropriate utility applications may require specialised jacket performance.

However, an anti-tracking jacket does not eliminate the need for proper cable positioning and electrical-field assessment.

Instead, it forms one part of the overall engineering response.

A later A-Series technical satellite will examine anti-tracking jackets and high-voltage ADSS environments in detail.

OPGW Has a Different Electrical Function

OPGW does not attempt to remain electrically isolated from the transmission infrastructure.

Instead, its metallic structure participates in the electrical protection system.

Therefore, OPGW design must consider electrical duties that do not apply to ADSS in the same way.

These requirements can include behaviour associated with lightning and fault-current conditions.

Consequently, OPGW engineering combines optical, electrical and mechanical considerations.

ADSS vs OPGW and Lightning

Lightning provides a useful way to understand the difference.

OPGW occupies the overhead ground-wire system and contributes to the power network’s protection architecture.

ADSS does not.

Therefore, ADSS should never be selected as though its dielectric construction allows it to perform OPGW’s electrical shielding function.

Instead, ADSS provides optical communications independently of that function.

This distinction reinforces why the two products do not act as direct substitutes in every project.

Mechanical Strength in ADSS vs OPGW

Both cable systems require substantial mechanical engineering.

ADSS must support itself across the intended span while managing wind, sag, tension and temperature.

Likewise, OPGW must withstand the mechanical conditions associated with its position on the transmission system.

However, the technologies achieve their mechanical capability using different construction philosophies.

ADSS relies on dielectric reinforcement, while OPGW incorporates metallic elements.

Therefore, designers should compare actual mechanical specifications rather than assume that one construction is inherently stronger.

Span Capability in ADSS vs OPGW

Maximum span frequently appears in aerial cable discussions.

However, span alone never provides enough information to select a cable.

The actual mechanical requirements depend on:

• cable mass;
• cable diameter;
• installation tension;
• sag;
• wind loading;
• temperature;
• terrain;
• route geometry; and
• supporting structures.

Therefore, engineers should avoid asking simply:

“Which cable can span farther?”

Instead, they should ask:

“Which cable architecture and mechanical design suit this route and infrastructure?”

Wind Loading in ADSS vs OPGW

Both technologies operate in exposed aerial environments.

Therefore, wind acts on both.

However, cable diameter, mass, construction and installation conditions can differ substantially.

Consequently, engineers need to assess the actual cable rather than apply generic assumptions.

For ADSS specifically, wind interacts closely with span, sag, tension, cable diameter and supporting infrastructure.

Our technical guide to Understanding Wind Loading in ADSS Fibre Cable examines this relationship in detail.

Read the wind loading guide →

Therefore, wind loading forms part of both product selection and route engineering.

Sag and Tension

ADSS requires a controlled relationship between sag and tension.

Increasing tension generally reduces sag. However, excessive tension can increase mechanical stress on the cable, hardware and structures.

Conversely, excessive sag can create clearance and cable-management problems.

Therefore, installers need to follow the appropriate sag-tension requirements for the selected ADSS cable.

OPGW also requires appropriate mechanical design. However, engineers calculate and manage its mechanical behaviour according to the OPGW construction and transmission-line requirements.

Consequently, field crews should never apply one cable type’s installation assumptions to another.

Installation Hardware

ADSS and OPGW require hardware designed for their respective constructions.

An ADSS system can include:

• suspension assemblies;
• dead-end assemblies;
• tension hardware;
• pole brackets;
• cable storage arrangements; and
• vibration-control components where required.

OPGW also requires purpose-designed hardware.

However, its fittings need to suit the metallic cable construction and the mechanical and electrical requirements of the ground-wire system.

Therefore, hardware compatibility extends beyond cable outside diameter.

Installation Complexity: ADSS vs OPGW

It is tempting to say that one technology always provides an easier installation.

However, project context matters more.

Installation complexity can depend on:

• whether the project is greenfield or brownfield;
• whether infrastructure remains energised;
• network access arrangements;
• pole or tower configuration;
• transmission outages;
• span length;
• route access;
• clearances;
• structural capacity; and
• required hardware.

Nevertheless, ADSS can offer a significant architectural advantage when the objective is simply to add an independent communications path to suitable existing aerial infrastructure.

In that situation, engineers do not need to make the optical cable itself part of the ground-wire system.

Working Around Existing Electrical Infrastructure

Although ADSS uses dielectric construction, installers still need to manage the hazards of working near electrical infrastructure.

Therefore, the installation method must comply with:

• network-owner requirements;
• safe approach requirements;
• appropriate work practices;
• site-specific risk controls; and
• relevant electrical safety obligations.

The cable’s dielectric construction does not make the work environment electrically safe.

Consequently, contractors must separate cable characteristics from worker safety requirements.

ADSS vs OPGW Cost

A meaningful cost comparison should focus on the complete installed system.

Comparing cable price per metre can produce a misleading result.

For ADSS, project cost can include:

• cable;
• suspension hardware;
• tension hardware;
• pole attachments;
• engineering;
• installation;
• access; and
• structural assessment.

Meanwhile, OPGW costs can include:

• cable;
• specialised fittings;
• transmission-line engineering;
• installation;
• system access;
• electrical network requirements; and
• potentially significant operational considerations.

Therefore, the project architecture drives the economic comparison.

Brownfield Cost Considerations

Existing infrastructure often creates an important distinction.

Replacing an existing ground wire with OPGW may involve work on critical transmission infrastructure.

Consequently, project planning can become more complex.

If suitable poles and attachment positions exist, an ADSS communications overlay may avoid modifying the existing ground-wire function.

Therefore, ADSS can prove attractive in appropriate brownfield communications projects.

However, engineers must still consider pole capacity, clearances, electrical conditions and installation requirements.

Greenfield Cost Considerations

A greenfield transmission project creates different economics.

If the new network requires an overhead ground wire anyway, OPGW can combine that requirement with the fibre communications requirement.

Consequently, the incremental cost of adding optical capability through OPGW may compare favourably with creating a completely separate communications route.

Therefore, cost comparisons must reflect the infrastructure being built rather than simply the cable products themselves.

Network Outages and Operational Constraints

Operational constraints can significantly affect project economics.

For example, work on existing transmission infrastructure may require specific outage arrangements or work methods.

Therefore, the availability and cost of network access can influence an OPGW upgrade.

ADSS may create different installation options because it forms a separate communications cable.

Nevertheless, ADSS installation around existing electrical infrastructure still requires appropriate safety and network-owner controls.

Consequently, project scheduling and operational access deserve consideration during the comparison.

ADSS vs OPGW Maintenance

The two technologies also create different asset-management environments.

ADSS operates as a separate communications cable.

Therefore, inspection may focus on:

• cable condition;
• sag;
• attachment hardware;
• cable storage;
• vegetation;
• pole condition; and
• environmental exposure.

OPGW forms part of both the communications and electrical transmission infrastructure.

Consequently, utilities manage it within a broader transmission asset context.

Neither system eliminates maintenance requirements.

Instead, lifecycle practices should reflect the function and criticality of the installed network.

ADSS vs OPGW Optical Performance

Both systems can provide high-capacity optical communications.

Therefore, communications applications alone rarely determine which architecture engineers should select.

Both systems can support applications such as:

• Ethernet;
• operational telecommunications;
• SCADA;
• protection communications;
• monitoring;
• control;
• voice;
• video; and
• other digital services.

Consequently, the surrounding cable architecture usually becomes the more important differentiator.

The optical fibres must meet the transmission requirements, while the cable structure must meet the aerial infrastructure requirements.

G.657.A2 in the RapidConnect® A-Series™

RapidConnect® standardises the A-Series™ around ITU-T G.657.A2 bend-insensitive singlemode fibre.

G.657.A2 provides improved macrobending performance while maintaining compatibility with conventional singlemode networks.

However, engineers should keep fibre classification and cable architecture separate.

G.657.A2 describes the optical fibre.

ADSS describes an all-dielectric, self-supporting aerial cable architecture.

OPGW describes a fibre-containing metallic ground-wire architecture.

Therefore, fibre type alone cannot determine whether ADSS or OPGW represents the correct infrastructure solution.

Standards for ADSS and OPGW

Recognised international standards treat ADSS and OPGW as distinct aerial optical cable systems.

For projects requiring formal standards information, the Standards Australia Store provides access to Australian and internationally adopted technical standards relevant to fibre optic cable and infrastructure.

Applicable standards can vary according to the project and cable construction. Therefore, engineers should confirm the standards and compliance requirements that apply to the actual product and network.

This separation between ADSS and OPGW standards further reinforces their different engineering roles.

RapidConnect® A100, A250 and A500 ADSS Platforms

After engineers decide that ADSS provides the appropriate architecture, they still need to select the correct mechanical platform.

RapidConnect® structures the A-Series™ around three span classes:

A100

Short-span aerial infrastructure

Nominal spans up to 100 m.

A250

Medium-span infrastructure

Nominal spans up to 250 m.

A500

Long-span critical infrastructure

Nominal spans up to 500 m.

However, these span classifications represent starting points rather than unconditional installation guarantees.

Wind loading, sag, tension, cable construction, route conditions, attachment hardware and supporting structures all influence final selection.

The RapidConnect® A-Series™ ADSS Fibre Optic Cable range provides further information about the A100, A250 and A500 platforms and their role within engineered aerial fibre infrastructure.

When Should You Consider ADSS?

ADSS can make strong engineering sense when the project requires a dedicated aerial fibre communications path.

Typical situations include:

• adding fibre to suitable existing utility poles;
• extending regional telecommunications;
• connecting utility facilities;
• supporting mining or industrial infrastructure;
• linking renewable-energy assets;
• building pole-to-pole telecommunications routes; and
• creating communications networks that should remain separate from the electrical ground-wire function.

However, designers should still assess the complete route.

Therefore, available poles alone should never determine the cable architecture.

When Should You Consider OPGW?

OPGW can make strong engineering sense when the project requires both:

an overhead ground wire

and

optical communications.

For example, a new transmission line may need an overhead ground wire regardless of communications requirements.

If the project also needs optical fibre, OPGW can combine both functions efficiently.

Likewise, a major transmission upgrade that already involves replacing the existing ground wire may create an opportunity to introduce OPGW.

Therefore, OPGW fits particularly well where fibre communications should integrate directly into the transmission-line protection architecture.

ADSS vs OPGW Fibre Optic Cable for Distribution Networks

Distribution networks can offer suitable applications for ADSS.

For example, utilities may require communications fibre along existing pole routes without needing the new cable to perform a ground-wire function.

Consequently, ADSS can provide a logical architecture where:

• poles provide suitable attachment locations;
• structures can support the additional loads;
• clearances meet requirements;
• electrical conditions suit the cable design; and
• span requirements fall within the selected ADSS platform.

OPGW, by contrast, more commonly aligns with infrastructure that specifically uses an overhead ground-wire architecture.

Therefore, network configuration should drive the choice.

ADSS vs OPGW Fibre Optic Cable for Transmission Networks

Transmission applications require a more nuanced comparison.

OPGW commonly suits transmission infrastructure because it performs the overhead ground-wire function while carrying fibre.

However, ADSS can also support communications along suitable electricity infrastructure where engineers provide an appropriate attachment location.

Therefore, engineers should avoid using voltage level alone to select the technology.

Instead, they should consider:

• required electrical function;
• structure configuration;
• communications architecture;
• electrical-field conditions;
• span;
• wind loading;
• installation requirements; and
• lifecycle objectives.

Consequently, different parts of the same utility organisation may legitimately use both technologies.

ADSS vs OPGW Fibre Optic Cable for Utility Communications

Utility communications networks support many operational requirements.

For example, fibre can carry:

• SCADA;
• protection signalling;
• network monitoring;
• CCTV;
• automation;
• voice;
• data; and
• asset-management traffic.

Both ADSS and OPGW can support these optical services.

However, the physical relationship with the electrical network differs substantially.

Therefore, communications bandwidth represents only one part of the selection process.

The project must also determine how the fibre should physically and electrically integrate with the power infrastructure.

ADSS vs OPGW Fibre Optic Cable for Renewable Energy

Renewable energy infrastructure can require extensive communications connectivity.

For example, fibre may connect:

• substations;
• generation assets;
• monitoring systems;
• operational facilities;
• security systems; and
• control infrastructure.

If the project also requires transmission infrastructure with an overhead ground wire, OPGW may integrate communications into that system.

Alternatively, ADSS can create a separate communications route across suitable pole infrastructure.

Therefore, designers should first establish whether the fibre needs to form part of the ground-wire system or remain an independent communications asset.

ADSS vs OPGW Fibre Optic Cable for Regional Infrastructure

Regional communications networks can cover substantial distances.

Consequently, existing infrastructure, maintenance access and lifecycle costs can influence the preferred architecture.

Where suitable pole infrastructure already exists, ADSS can provide an independent communications route.

Conversely, new or substantially rebuilt transmission infrastructure may create a strong case for OPGW.

Therefore, the route and infrastructure context should guide the decision.

Common ADSS vs OPGW Fibre Optic Cable Selection Mistakes

Several misconceptions can distort the comparison.

Comparing Fibre Count Alone

Both technologies can contain optical fibres.

However, fibre count tells us little about their electrical function or mechanical role.

Therefore, fibre capacity should not drive the architectural decision by itself.

Assuming ADSS Replaces a Ground Wire

ADSS does not perform the overhead ground-wire function.

Therefore, it cannot simply replace OPGW where the electrical system requires that function.

Treating OPGW as Armoured ADSS

OPGW does much more than add metal around fibre.

Instead, its conductive metallic construction forms part of the electrical transmission system.

Comparing Cable Price Alone

Cable cost represents only part of installed system cost.

Therefore, engineering, hardware, access, structural requirements and operational constraints also matter.

Ignoring Existing Infrastructure

Brownfield and greenfield projects present very different opportunities.

Consequently, the same cable architecture will not necessarily provide the best solution in both situations.

Assuming ADSS Is Electrically Unaffected

All-dielectric does not mean immune to electrical-field effects.

Therefore, sheath selection and attachment location can still matter.

Ignoring Mechanical Conditions

Both technologies operate in aerial environments.

Consequently, wind, span, tension and structural loads remain important.

A Practical ADSS vs OPGW Fibre Optic Cable Selection Process

A structured process helps clarify the decision.

Step 1 — Define the Required Infrastructure Function

First, determine whether the project needs:

communications only

or

communications plus an overhead ground-wire function.

This decision immediately separates many ADSS and OPGW applications.

Step 2 — Review Existing Infrastructure

Next, determine whether the route uses existing poles, transmission towers or new structures.

Brownfield and greenfield projects can produce very different engineering outcomes.

Step 3 — Assess the Electrical Environment

For ADSS, review attachment location, clearances, electric-field exposure and sheath requirements.

For OPGW, review the electrical requirements associated with the ground-wire function.

Step 4 — Assess the Mechanical Route

Then consider:

• span lengths;
• cable loading;
• wind exposure;
• terrain;
• route geometry;
• supporting structures; and
• hardware.

Step 5 — Review Installation Constraints

Next, determine how construction will interact with the existing electricity infrastructure.

Consider access, outage requirements, work methods and project safety controls.

Step 6 — Compare Installed System Cost

Compare the complete project rather than cable price per metre.

Therefore, include engineering, hardware, installation, access and operational requirements.

Step 7 — Consider Lifecycle Requirements

Finally, consider maintenance, network criticality, access and expected service life.

This structured approach provides a far more meaningful answer than asking whether ADSS or OPGW is simply “better”.

Neither ADSS nor OPGW Is Universally Better

Ultimately, ADSS vs OPGW Fibre Optic Cable is not a contest with one universal winner.

OPGW provides an excellent solution when the network needs optical communications integrated with an overhead ground-wire function.

ADSS provides an excellent solution when the network needs a separate, self-supporting and all-dielectric communications path.

Therefore, each technology occupies a different position within aerial utility infrastructure.

The correct choice depends on what the network actually needs the cable to do.

Choosing Between ADSS vs OPGW Fibre Optic Cable

The ADSS vs OPGW Fibre Optic Cable decision becomes much clearer once engineers define the required infrastructure function.

ADSS provides a dedicated all-dielectric, self-supporting optical communications path. Therefore, it can offer substantial flexibility when utilities, telecommunications operators and infrastructure owners need to add fibre to suitable aerial routes without making the new cable part of the electrical ground-wire system.

OPGW combines optical communications with the metallic overhead ground-wire function. Consequently, it can provide a highly integrated solution where the electrical system already requires that ground-wire infrastructure.

Neither technology should be selected solely according to:

• fibre count;
• maximum span;
• cable diameter; or
• price per metre.

Instead, engineers should evaluate:

communications function + electrical function + existing infrastructure + span + wind + mechanical loading + installation + lifecycle requirements.

Once those factors are understood, the appropriate architecture usually becomes much clearer.

For detailed information about the RapidConnect® A100, A250 and A500 platforms, all-dielectric construction and engineering considerations for self-supporting aerial fibre, visit the RapidConnect® A-Series™ ADSS Fibre Optic Cable Authority Hub.

Together with our introductory, pole-to-pole installation and wind-loading guides, this comparison forms part of Anderson Corporation’s growing technical knowledge centre for engineered aerial fibre infrastructure.