BS G 206:1969

Foreword
Specification
1 Scope
Section 1. Requirements
2 Materials
3 Construction
4 Colour fastness
5 Cable size identification
6 Identification of manufacturer and year of
    manufacture
7 Designation of cable
8 Packing and labelling
Section 2. Tests
9 General
Type tests only
10 Voltage test at high temperature
11 Ageing in air
12 Surface creepage test
13 Low temperature test
14 Heat test
15 Flexibility test
16 Abrasion test
17 Simulated installation test
18 Climatic test
Type and production routine tests
19 Construction
20 Spark test on core
21 Spark and voltage tests on completed cable
22 Conductor resistance test
23 Identification, packing and labelling
Type and production quality tests
24 Voltage test on core
25 Insulation test on core
26 Heat cycling test
27 Resistance to fluids
28 Resistance to hot kerosene
29 Shrinkage test
30 Flammability test
31 Fire resistance test
32 Tensile and elongation tests on wires from
    conductors
33 Visual inspection of wires
34 Tinning test
35 Test for nickel plating of conductors
Appendices
A Maximum current rating for Fepsil cables
B Formulae for glass braid
C Abrasion testing machine
D Dimensions of ferrule for fluid resistance test
Tables
1 Details of Unifepsil cables
2 Details of Unifepsilmet cables
3 Details of Unifepsilmetsheath cables
4 Thickness of nickel on copper conductors
5 Letters for the identification of the year of
    extrusion of the silicone rubber
6 Resistance to fluids
7 Flammability test times
8 Tensile tests on wires from conductors
9 Abrasion test weights
10 Electrical tests on cores and cables
Figures
1 General arrangement of cable abrasion tester
2 View of cable abrasion tester showing detector
    roller and wire with top weights removed
3 Details of abrasion mechanism of cable abrasion
    tester
4 Detail of ferrule

Gives the requirements for 'Fepsil' type cables for aircraft wiring of circuits where the potential between conductors, or between a conductor and metal braid, or between a conductor and the aircraft structure, is less than 600 volts (r.m.s.) and the frequency less than 1600 volts (r.m.s.) and where any combination of ambient temperature and conductor current for continuous service does not produce a stabilized conductor temperature in excess of 190 degree C. Suitable for fixed wiring in aircraft at temperatures down to -75 degree C, but not for severe flexing at temperatures below -55 degree C. Classifies and identifies cables by a series of numbers indicative of the conductor cross sectional area.