(1) You must use electrical equipment and wiring on ammonia installations that is either of the following:
(a) General purpose; or
(b) Weather resistant.
(2) You must follow the electrical requirements found in another chapter, chapter
296-24 WAC, Part L for Class 1, Group D locations when the concentrations of ammonia in air are in excess of 16% by volume.
[Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050. WSR 15-23-086, § 296-826-40005, filed 11/17/15, effective 12/18/15. Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050,
49.17.060. WSR 06-10-067, § 296-826-40005, filed 5/2/06, effective 9/1/06.]