hello have 2x 3 phase 60a/208v and 4x20a 120v load that need to be fed from panel.
all continuous loads.
1.how can I calculate main breaker size in panel?
thanks
I come up with 183 amps, so either way a 200A panel.
Load totals 52.8 kVA
I add the 13.2 kVA 25% for continuous = 66 kVA
Those numbers sound wrong for a proper calculation though, like perhaps minimum circuit ampacity specs, not the kind of data I would use to size a panel per article 220.
Can you tell us more about the loads? Whats the largest motor?
Do you have nameplate info ?
Are they HVAC, motors,commercial cooking equipment , receptacles, lighting?
Even if just the 120V loads are continuous (which I suspect) you would be at 153 amps, so still a 200A panel.