PDFWAC 296-307-40039
Electrical equipment and wiring.
(1) Electrical equipment and wiring for use in ammonia installations must be general purpose or weather resistant as appropriate.
(2) Where concentrations of ammonia in the air in excess of 16% by volume are likely to be encountered, electrical equipment and wiring must be specified by and installed according to chapter 296-307 WAC Part T, for Class I, Group D locations.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 20-21-091, § 296-307-40039, filed 10/20/20, effective 11/20/20. Statutory Authority: RCW 49.17.040. WSR 98-24-096, § 296-307-40039, filed 12/1/98, effective 3/1/99. WSR 97-09-013, recodified as § 296-307-40039, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-40039, filed 10/31/96, effective 12/1/96.]