1616.3—General requirements.
(a) Summary of test method.
Conditioned specimens are suspended one at a time vertically in holders in a prescribed cabinet and subjected to a standard flame along their bottom edges for a specified time under controlled conditions. The char lengths are recorded.
(b) Test criteria.
The test criteria when the testing is done in accordance with § 1616.4
Sampling and acceptance procedures and § 1616.5
Test procedures are:
(1) Average char length.
The average char length of five specimens shall not exceed 17.8 cm. (7.0 in.).
(2) Full-specimen burn.
No individual specimen shall have a char length of 25.4±0.5 cm. (10±0.2 in.).
(c)
Details of the number of specimens which must meet the above test criteria for unit acceptance is specified in § 1616.4.