Coastalguy1
Member
- Location
- Virginia Beach, VA
I have been asked to look into a problem which exists on a commercial building. It has a 1600amp 277/480v 3ph 4w main breaker which is ground fault protected in accordance with NEC 230.95. In the past it has tripped when a maintenance man was changing a light bulb and shorted wires together. Most currently and frequently it trips when an air conditioning compressor shorts out (another problem our company is looking into!). The setting on the GFP main breaker is set to it's maximum allowable setting. Is a complete fault current study needed to correct this problem? Any help and advice will be appreciated as always.
Coastalguy1
Coastalguy1