50 amp wiring
I have a question concerning 50 amp wiring in fifth wheel and generators. My idea is that if the two 120 volt lines are separate, meaning no device will use the 2 hot wires, could I run two separate g...
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hmknightnc wrote:BB_TX wrote:hmknightnc wrote:
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Folks, he's got a 50 amp service RV which is actually two 120 volt hots at 50 amps each or a total of 100 amps on the common neutral. A 50 amp RV can handle 12,000 watts.
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Wrong. You need to understand how split phase 240 vac works. Since the two hot legs are 180 out of phase you never have more than 50 amps on the neutral. And it just so happens that if each hot leg is supplying the exact same current then there will be no current thru the neutral.
Hmm..., you are correct on the actual current flow through the neutral for a balanced split phase 220 volt system but I think the required wire sizing guides would require capacity for 100 amps. But then it's been 30 years since I've done any actual electrical engineering, could be recalling wrong
You're recalling wrong.
No RV cord has anything any bigger than a #6 for the neutral.
