John Paul
Member
- Location
- Norfolk, VA
Questions:
Why do mechanical manufacturers specify 460V when common distribution is 480V?
If equipment is rated at 460V what is the standard tolerance to voltage fluctuation, %10 over and under seems normal? Does the NEC have anything to say about % regulation?
Why do mechanical manufacturers specify 460V when common distribution is 480V?
If equipment is rated at 460V what is the standard tolerance to voltage fluctuation, %10 over and under seems normal? Does the NEC have anything to say about % regulation?