scope:

This Defence Standard specifies the requirements for wires and cables insulated with cross linked polyolefin and sheathed with cross linked polyvinylidene fluoride.

These wires and cables are suitable for use where the potential between conductors, or between a conductor and the equipment structure, or between a conductor and a metal braid surrounding the cable does not exceed 600 V (rms), where the frequency does not exceed 1600 Hz and where the combination of ambient temperature and temperature rise due to the current produces a stabilized conductor temperature not exceeding the rated temperature.

These wires and cables are suitable for fixed wiring at temperatures down to minus 75⁰C but are not suitable for severe flexing at temperatures below minus 40⁰C.

These wires and cables do not support combustion and will withstand contamination with ester based lubricants and with ester based hydraulic fluids .

The variants differing in their conductors and total thickness of insulation (thus in their weight and resistance to abrasion) are available unscreened, Tables IA to IC, or screened and jacketed Tables ID to IF as specified.

The thick wall insulated wires are normally available where dimensional replacements for those wires and cables listed in BS 2G 221 are required for wiring without further protection.

The thin wall insulated wires and cables are intended for internal wiring of equipment.