Outdoor or under-chassis wiring (120/240 volts) exposed to moisture and mechanical damage must be protected by rigid metal conduit, electrical metallic tubing, liquid-tight flexible metal conduit, or nonmetallic conduit. The conductors shall be type RW, TW, or equivalent.
[Statutory Authority: RCW
43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1290, filed 10/23/96, effective 11/25/96.]