GM WORLDWIDE ENGINEERING STANDARDS
Template For ENG STDS
GMW16740
© Copyright 2017 General Motors Company All Rights Reserved
June 2017
Page 9 of 20
Table 4: Insulating Material According to Temperature Class
Tape Temperature Class
Cable Sample
Cable Insulation Type
Cable Temperature
Class
Class B (T2)
Seven (7) 1.0 mm
2
PVC
Class B (100 °C)
Class C (T3)
XLPE
Class C (125 °C)
Class D (T4)
XLPE/XLPO
Class D (150 °C)
Class E (T5) or higher
XLFE/ETFE
Class E (175 °C)
Table 5: Resistance to Flame Propagation
Flammability rating
Requirement
A (non-flammable)
Flame goes out as soon as burner is removed
B (self-extinguishing)
The flame goes out before the first reference mark (38 mm) is reached
C
Burning rate ≤ 100 mm/minute
D
Burning rate > 100 mm/minute
4.12.2 Requirements. For exterior, underbody, and under-hood harness applications, the tape shall meet
flammability rating of ʺBʺ minimum. For interior harness applications, the tape shall meet flammability rating of
ʺCʺ minimum.
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