How many 15 amp 110/120v Circuits will a 200 amp 208v Three Phase Connection Support?

[Trade Show Matt]

Hello,

A newbie here. How many 15 amp 110/120v circuits should a 200 amp 208v Three Phase connection support? I'm ordering power at a trade show hall and I've recently learned my company owns some certified electrical panels w/ 15 amp circuit breakers that support a 200amp 208v three-phase connection (I haven't been able to view these yet). In the past I've ordered discrete 110/120v 15 amp outlets from the hall, but ordering Three Phase connection service to plug into our own panel is looking like a much cheaper option. I realize this may be an apple to oranges comparison but if there's an easy way to compare it will allow me to place the most economical order.

Thanks in advance for any information,

Matt

 

[ActionDave]

Apples and oranges comparison to what? A 200A panel can handle 200 amps of load, three phase or single phase. The number of 15A circuits isn't an issue.

 

[Smart $]

As mentioned by AD, the panel will handle 200 amps of load. On a 208Y/120V 3Ø 4W system, that's be 200A × 120V × 3 lines = 72,000VA. If each 15A circuit were completely loaded (or loaded to 80% if continuous), that'd be 15A × 120V = 1,800VA. So at least 39.