50 amp wiring question
I'm getting a new trailer and it will be my first with 50 amp service. I've always noticed the standard NEMA 14-50R 4 pole receptacle on the AC pedestals but never paid any attention to the female sh...
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I took the time to balance as best I could.. I mean CW when they moved a breaker to install my inverter put both air conditioners on one leg.. Not a good plan.
On 30 amps it won't matter because you can not overload a leg. But here is why balancing is important.
_________L1
|
|======Neutral
|
__________l2
Now let's assume you are one volt loss at normal load EACH way from the transformer with the loads perfectly balanced (All but impossible but we can get close)
Balanced you now have 124 volts either side of neutral
IF you Now let's move the loads so it's 2/3 1/3
Now we have more loss on one leg PLUS we have the return loss on the neutral
Slightly less loss on the 2nd leg
But every anp that flows through the neutral has double the voltage loss
On 30 amps it won't matter because you can not overload a leg. But here is why balancing is important.
_________L1
|
|======Neutral
|
__________l2
Now let's assume you are one volt loss at normal load EACH way from the transformer with the loads perfectly balanced (All but impossible but we can get close)
Balanced you now have 124 volts either side of neutral
IF you Now let's move the loads so it's 2/3 1/3
Now we have more loss on one leg PLUS we have the return loss on the neutral
Slightly less loss on the 2nd leg
But every anp that flows through the neutral has double the voltage loss
