Indoor FTTH · Acceptance evidence
Indoor FTTH Cable: LSZH and Fire-Test Documents
LSZH is a starting description, not a complete building approval. Specify the required fire evidence and verify that the offered cable construction is covered.
Direct answer: LSZH alone does not prove project compliance
Do not approve an indoor FTTH cable solely because the quotation says LSZH. Low-smoke, zero-halogen describes intended material characteristics; the order still needs the project's required tests, criteria and documentation for the actual construction. The responsible building or network authority decides what is acceptable for the destination and installation. This guide organizes procurement evidence and does not determine a building's fire classification or declare Jiaxin products certified.
Start with the installed environment
Describe whether the cable enters a dwelling, shared corridor, riser or another specified space, and whether it is routed alone or with other cables. Ask the approving party to identify the applicable requirement and edition. A buyer's shorthand such as 'indoor approved' leaves the supplier unable to distinguish a material preference from a mandatory test or classification. Record any unresolved approval before comparing quotations; do not select the requirement after manufacturing.
Separate flame propagation from smoke and gas evidence
IEC 60332-1-2:2025 addresses vertical flame propagation on a single cable using a specified flame; IEC explicitly warns that this does not establish group-cable fire-propagation compliance. IEC 61034-2 addresses smoke density under defined burning conditions. IEC 60754-1 concerns halogen acid gas, excluding hydrofluoric acid, from cable materials. These are different questions and specimen scopes. The edition and pass criteria must come from the approved specification, not from a generic LSZH label.
Match the report to the offered construction
Request the complete report reference, laboratory identity, method and edition, tested specimen description and results needed by the acceptance plan. Compare fibre count, dimensions, sheath and relevant material or construction revisions with the ordered SKU. If a report covers a family, ask for the documented basis and the approving party's acceptance of that coverage. A report for a sheath compound should not silently become a report for the complete finished cable.
Keep document types distinct
A datasheet declares offered parameters. A test report records a particular test and specimen. A certificate or local classification has its own scope and issuer. A supplier declaration describes a stated responsibility; it is not automatically independent evidence. Ask for the document type required by the project and verify its relevance. Do not add an unverified certification mark to the quotation or jacket artwork simply because a buyer requests a familiar acronym.
Freeze the order and the substitution rule
Record the approved cable drawing or construction revision, material description, markings and evidence list together. If a proposed change affects sheath formulation, dimensions or another report-relevant feature, flag it for review before production or dispatch. The approving party determines whether existing evidence remains applicable or new evidence is needed. An approved physical sample and a colour match cannot by themselves prove fire performance.
Make release possible without promising unsupported reports
Identify which documents are already available, which require verification and which are new requirements with timing or cost still to be agreed. Keep optical, dimensional and length acceptance records alongside fire evidence, since one does not replace the others. Link batch and reel identifiers to the approved order at dispatch. The cover shows a white drop-cable construction from the local factory library; its colour and appearance are not evidence of LSZH composition or a passing fire test.
FAQ: Does LSZH mean fireproof?
No. It is not a promise that a cable cannot burn or will preserve service during a fire. Specify the required performance and evidence with the project's approving party.
FAQ: Is a single-cable flame test enough for a cable bundle?
Not automatically. IEC 60332-1-2 distinguishes its single-cable scope from group installation requirements. Obtain the requirement for the actual installation rather than extending the result yourself.
FAQ: Can a similar model's report be accepted?
Only when the report's documented scope or family coverage applies to the offered construction and the approving party accepts it. Similar names or jacket colours are not a coverage argument.
Indoor FTTH fire-evidence procurement matrix
| Question | Evidence to request | Do not assume |
|---|---|---|
| Where will it be installed? | Destination, space, route arrangement and approved requirement | One indoor rule applies everywhere |
| How is flame propagation assessed? | Specified method, edition, specimen scope and result | A single-cable result covers a bundle |
| What smoke performance is required? | Specified smoke test and acceptance criterion | LSZH wording proves a measured smoke result |
| What gas/material evidence is required? | Named method, material scope and required result | A material report covers every finished construction |
| Does the offered SKU have coverage? | Report identity, construction mapping and acceptance authority | A similar product or generic certificate is sufficient |
Six checks before approving the indoor FTTH order
- Obtain the destination and actual installed-route requirements.
- List the required tests, editions, criteria and document types.
- Identify the exact offered construction and drawing revision.
- Check report scope and resolve any family-coverage claim.
- Freeze markings, evidence deliverables and substitution approval.
- Link dispatch records to the approved SKU and batch before release.
Related products and approval records
Official test scopes — not certification of the offered product
Define the evidence before the indoor cable order
Send the destination, building use, route environment, required standard editions and acceptance criteria, offered cable construction and the document approval deadline. We can clarify the evidence requested for the quotation; unverified certification is not assumed.
Send the Indoor Cable Requirements