WAC 51-50-0509. Section 509 — Incidental uses

Table 509.1 Incidental Uses Room or Area Separation and/or Protection Dry type transformers over 112.5 kVA and required to be in a fire resistant room per NEC (NFPA 70) Section 450.21 (B) 1 1 hour or provide automatic sprinkler system Room or Area Separation and/or Protection Dry type transformers over 112.5 kVA and required to be in a fire resistant room per NEC (NFPA 70) Section 450.21 (B) 1 1 hour or provide automatic sprinkler system 1 Dry type transformers rated over 35,000 volts and oil-insulated transformers shall be installed in a transformer vault complying with NFPA 70. 1 Dry type transformers rated over 35,000 volts and oil-insulated transformers shall be installed in a transformer vault complying with NFPA 70. (Remainder of table unchanged)