Single phase load on 208/120Y calculation req'd by Oreg

[hardworkingstiff]

Re: Single phase load on 208/120Y calculation req'd by Oreg

[/QUOTE]Reply: Stiff, the peaks of the 208V waves do not conincide with the peaks of the 120V waves.
[/QB][/QUOTE]

Thanks Rattus!

I think that is what I was missing. Thanks Very Much!

 

[rattus]

Re: Single phase load on 208/120Y calculation req'd by Oreg

Originally posted by bob:
[QB]

(From hardworking stiff)
If you connect 3 208-volt resistive loads (of 5 amps each, one load each on phases AB,AC,BC) to the same transformer (without the previous load), each winding will have 10 amps and we will have 3120 VA working through the resisters(208*5*3)..

The Iline is 5 amps per phase not 10.

Reply: Wrong again! Iline = Iphase = 8.66A, and with the resistive loads the real power is 3120W however you compute it.

[ March 20, 2005, 06:16 PM: Message edited by: rattus ]