012 Electrical metallic tubing.
(1) In addition to complying with the provisions of Article 358 NEC, electrical metallic tubing may not be installed in direct contact with the earth or in concrete on or below grade. Also see NEC 300.6 for resistance to corrosion.
(2) Where electrical metallic tubing is installed in wet locations, an equipment grounding conductor must be provided within the raceway and sized per NEC 250.122.
[Statutory Authority: Chapter
19.28 RCW, RCW
19.28.031 and
19.28.251. WSR 24-05-085, § 296-46B-358, filed 2/21/24, effective 4/1/24. Statutory Authority: RCW
19.28.006,
19.28.010,
19.28.031,
19.28.041,
19.28.061,
19.28.101,
19.28.131,
19.28.161,
19.28.171,
19.28.191,
19.28.201,
19.28.211,
19.28.241,
19.28.251,
19.28.281,
19.28.311,
19.28.321,
19.28.400,
19.28.420,
19.28.490,
19.28.551. WSR 08-24-048, § 296-46B-358, filed 11/25/08, effective 12/31/08. Statutory Authority: RCW
19.28.006,
19.28.010,
19.28.031,
19.28.041,
19.28.061,
19.28.101,
19.28.131,
19.28.161,
19.28.171,
19.28.191,
19.28.201,
19.28.211,
19.28.241,
19.28.251,
19.28.271,
19.28.311,
19.28.321,
19.28.400,
19.28.420,
19.28.490,
19.28.551, 2002 c 249, chapters
34.05 and
19.28 RCW. WSR 03-09-111, § 296-46B-358, filed 4/22/03, effective 5/23/03.]