Building Fire Safety Route
LSZH or fire-resistant construction supports public building routes requiring smoke, halogen or fire-performance review.
LSZH / Fire Resistant Building Wire
LSZH / Fire Resistant Building Wire for building wire and fixed electrical installation routes.
LSZH / Fire Resistant Building Wire is reviewed for building electrical systems where conductor material, insulation type, circuit route and local code requirement define selection.
Product Overview
LSZH / Fire Resistant Building Wire should be selected according to the actual project route, not by product name alone. Before quotation, review wire type, conductor material, temperature rating, wet/dry location rating and local electrical code route. Datasheet wording, compliance documents and final supply notes should stay aligned with the selected standard and installation conditions.
Applications
- public buildings and enclosed electrical systems requiring fire-safety material review
- lighting, control or power routes where LSZH or fire-resistant wording is specified
- transport, commercial and infrastructure building wiring applications
- projects requiring smoke, halogen or circuit-integrity documentation before approval
Construction
copper or aluminum conductor with insulation and jacket system according to building wire type. Final conductor size, temperature rating, wet/dry location rating and wire type, temperature rating and installation route should follow the selected code route.
Marking on Cable
FARWALK CABLE – LSZH / Fire Resistant Building Wire – [standard] – [size] – [rating] – [year] – [meter mark]
Cable Identification
- Insulation color, conductor identification and printed marking can be matched to the requested building wire type.
- Wire type, conductor size and temperature rating should remain clear in product marking when required.
Standards
- UL 83
- UL 44
- UL 854
- ASTM B800 / B801 where applicable
Main Features
Code and Test Alignment
Material selection should follow the requested building code, fire test route and documentation requirements.
Controlled Indoor Use
For LSZH / Fire Resistant Building Wire, applied in building electrical systems where flame spread, smoke emission or circuit safety is a key concern.
Product Selection Guide
Wire Type
Confirm THHN/THWN-2, XHHW-2, THW, TFFN/TFN, SER or SEU before selecting conductor and insulation.
Local Code Route
Building wire must follow the destination market electrical code and approved installation method.
Wet / Dry Location
Review insulation rating, jacket type and temperature class according to conduit, raceway or service entrance use.
Conductor Material
Choose copper, aluminum or 8000-series alloy according to ampacity, voltage drop, termination and budget.
Technical Data Overview
| Nominal Area (mm²) | No. / Dia. of Wires (mm) | Insulation Thick. (mm) | Approx. Overall Dia. (mm) | Approx. Weight (kg/km) | Current Rating in Conduit (Amps) |
| Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V | Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V | Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V | Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V | Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V | Fire Resistant Stranded Copper (Mica + LSZH) – 450/750V |
| 1.5 | 7 / 0.52 | 0.7 | 3.3 | 25 | 17.5 |
| 2.5 | 7 / 0.67 | 0.8 | 4.0 | 38 | 24 |
| 4 | 7 / 0.85 | 0.8 | 4.6 | 55 | 32 |
| 6 | 7 / 1.04 | 0.8 | 5.2 | 78 | 41 |
| 10 | 7 / 1.35 | 1.0 | 6.7 | 130 | 57 |
| 16 | 7 / 1.70 | 1.0 | 8.0 | 195 | 76 |
| 25 | 7 / 2.14 | 1.2 | 10.0 | 305 | 101 |
| 35 | 19 / 1.53 | 1.2 | 11.2 | 410 | 125 |
| 50 | 19 / 1.83 | 1.4 | 13.2 | 550 | 151 |
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