Quote:
Originally Posted by Phil P
When you turned the first 20 amp load on line 1 the amp meter for line 1 and the amp meter for the natural will read 20 amps.
Then when you turn the second 20 amp load on line 2 you will read 20 amps on line 1 and 20 amps on line 2 and 0 amps on the natural.
The neutral only carries load when the loads are unbalanced.
Phil P
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Please explain this Phil... I'm not arguing but I can't get my head around it. I can see the N being 0 amps if a single load is spanning the two legs, (240 V dryer) but if you have 2-120V loads on opposite legs, say two A/C's (one on each leg)... those 2 legs are 180˚ out of phase with each other, which is why a 240 V load spans them... the A/C on one leg is high while the other is low (60 times a second). If separate loads span those 2 phases, then they are 180˚ out of phase with each other, therefore using the N at 180˚ intervals.
Am I missing something here? I am never too old to learn!