Flame Tests for Electrical Cables

UL 1581 Section 1061 (Cable Flame Test)

Description UL 1581, § 1061
(Cable Flame Test)
Length of specimen 24.01 in. (610 mm)
Burner Bunsen burner with additional air supply (Tirril gas burner) Ø 0.37 in. (9.5 mm)
Test temperature 500 W flame
Position of specimen vertical
Position of flame 20° to vertical specimen
Duration of flame 3 x 60 seconds with 30 seconds flaming break
Conditions The paper must be no more than 25% carbonized. The specimen may continue burning for a maximum of 1 minute after each application. Any material that drops must not ignite the cotton (B) placed beneath the specimen.
UL 1581 Section 1061 (Cable Flame Test) Setup
UL 1581 Section 1061