AKElectrician
Senior Member
- Location
- Soldotna, AK, USA
Have a 120/208V 400 amp 3 phase service feeding a police station, would 310.15 B4(c) apply or any other commercial building that lots of computers, copy machines, fluorescent lighting, parking lot lighting, etc. Assuming they don't mean the majority of the AVAILABLE load (400 amps is overkill for this building) but the majority of the load being used, this is my interpretation of whats written. The only thing that would trump this is if the load is calculated by the linear load of all receptacles at 180VA.