Direct answer
A glass transmission path does not make the complete cable metal-free. Review armor, strength members, messengers and tracer wires individually. Request a construction drawing and material list, and have qualified parties define treatment and installation responsibilities for metallic parts. Jacket color or the word armored is insufficient.
Identify metal using the complete construction
Corning PGS066 Revision 5 distinguishes strength members, armor and toneable configurations in a particular design. Glass transmission does not identify every material in a cable.
Use this guide for industrial/outdoor cables and protected preterminated assemblies. It supplies no bonding conductors, connection points or installation recipe. Qualified personnel should establish safety design and installation against applicable requirements and manufacturer instructions.
| Location | Requested information | Potential omission |
|---|---|---|
| Armor | Metallic/dielectric material and continuity | Armored without material identification |
| Strength members | GRP, steel or other construction | Looking only at the armor |
| Messenger/tracer | Presence, material and termination | Treating toneable as metal-free |
| Cable ends | Where layers end and are treated | Mismatched cable/assembly scope |
| Enclosure | Housing and mounting materials | Extending cable claims to equipment |
Dielectric armor is a distinct construction choice
A Corning dielectric-armor sheet illustrates all-dielectric construction and glass-yarn protection. It does not make every armored product metallic or establish identical mechanical performance.
Its no-grounding/bonding statement concerns that cable, not separately supplied cabinets, brackets, connector housings or messengers. Identify each item rather than using one cable sheet for the whole installation.
Separate tracing from protective functions
PGS066 lists toneable construction separately. If underground location is required, ask the designer to specify the identification method and material. Avoid an unexplained order demanding all-dielectric, a tracer and no metal simultaneously.
Mechanical evidence also needs a defined specimen and conditions. When armor changes, review affected diameter, weight, bend and termination requirements rather than predicting performance from material hardness alone.
Assign documentation to responsible parties
| Deliverable | Responsible review | Output |
|---|---|---|
| Material list/cross-section | Cable or assembly supplier | Metallic parts and locations |
| Protection requirements | Buyer and system designer | Mechanical/environmental needs |
| End treatment drawing | Assembly and installation parties | Layer and strength-member boundary |
| Electrical safety review | Qualified designer | Applicable requirements and approved plan |
| Inspection records | Agreed inspection party | Actual revision and scope |
Where one end is factory-finished and the other handled on site, identify responsibilities separately. Suppliers should state what is included; installers need to know what cannot be changed without review. No example establishes ARRANEX construction or performance.
Procurement FAQ
- Does nonconducting fiber establish a metal-free cable? Check armor, strength members and added wires.
- Does all-dielectric mean no mechanical protection? Materials and protection describe different aspects; request evidence for both.
- Can jacket color identify metal armor? Use parts, drawings and material records instead.
- Is there one grounding method for every armored cable? This guide sets none; qualified parties must determine system-specific requirements.
- What should the RFQ include? Cross-section, materials, end treatment, locating/protection needs and responsibility boundaries.
Related products and reading
- Armored assembly configuration review
- Harsh-environment product family
- Load and crush evidence
- Waterblocking and sealing scope
Product and solution links support requirements review. Suitability and scope depend on agreed specifications, without implying new specialized-environment capability or certification.
Contact an engineer with drawings and validation requirements
Sources and review date
Reviewed on 2026-10-17. Original source dates remain separate from this review. Procurement tables are editorial recommendations, and calculations illustrate stated assumptions rather than actual product data.
Sources checked: 2026-10-17