In a facility that has a 3 phase 4 wire service (277/480V) they have a new tool that only requires a 3 phase 3 wire 480v circuit (no neutral needed). The local AHJ is requiring a neutral be pulled because of 200.2 General
All premises wiring systems, other than circuits and systems exempted or prohibited by 210.10, 215.7, 250.21, 250.22, 250.162, 503.155, 517.63, 668.11, 668.21, and 690.41 Exception, shall have a grounded conductor that is identified in accordance with 200.6.
We've installed MCC's, UPS, tranformer feeds and other 3 phase 3 wire circuits off of services that are 3 phase 4 wire and did not pull a neutral and have NEVER had any comments or corrections. We always pull an EGC. Any comments or thoughts on this matter?
All premises wiring systems, other than circuits and systems exempted or prohibited by 210.10, 215.7, 250.21, 250.22, 250.162, 503.155, 517.63, 668.11, 668.21, and 690.41 Exception, shall have a grounded conductor that is identified in accordance with 200.6.
We've installed MCC's, UPS, tranformer feeds and other 3 phase 3 wire circuits off of services that are 3 phase 4 wire and did not pull a neutral and have NEVER had any comments or corrections. We always pull an EGC. Any comments or thoughts on this matter?