Section SPS 316.250 - Grounding and bonding(1) SUPPLEMENTAL ELECTRODE REQUIRED. The exception in 2011 and 2017 NEC 250.53 (A) (2) is not included as part of this chapter.(2) SUPPLEMENTAL ELECTRODE. This is a department rule in addition to the requirements in 2011 and 2017 NEC 250.53 (A) (3): A single electrode consisting of a rod, pipe or plate shall be augmented by one additional electrode of any of the types in NEC 250.52 (A) (4) to (A) (8).(3) TYPES OF EQUIPMENT GROUNDING CONDUCTORS. This is a department rule in addition to the requirements of 2017 NEC 250.118: A metallic raceway installed in direct contact with earth, in concrete slabs or floors poured on earth, or in exterior concrete walls below grade shall be augmented with a supplemental equipment grounding conductor identified in NEC 250.118 (1). This supplemental conductor shall be sized in accordance with NEC 250.122. An aluminum equipment grounding conductor used for this purpose shall be insulated.Wis. Admin. Code Department of Safety and Professional Services SPS 316.250
Amended by, CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: r. and recr. Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1), (2), cr. (3) Register June 2018 No. 750, eff. 8/1/2018.