UL 1581 Section 1090 (H) / Section 1100 (FT2)

Test set-up
The cable is fixed horizontally with the Bunsen burner flame applied vertically. The burner is angled 20° from the vertical. The cotton wool (B) is laid out next to the burner.

Flame temperature
Determined by the specified setting of the Bunsen burner flame.

Test duration
30 seconds

Compliance criterion
The flame propagation speed must not exceed 25 mm/min. Material dripping off must not ignite the cotton wool (B).

Section 1090: The rate of dispersion of the cable may not exceed 25 mm/min

Section 1100: The length of the carbonized part may not exceed 100 m

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