I'm looking at a break room in an office building with a refrigerator, microwave, and most importantly - electric range (residential grade). I've been asked to research the requirements for fire protection in this room. Does this room require a smoke detector or exhaust hood over the range...
This question has been bothering me for a while..
There are a lot of products on the market that can be connected using a 208V, single phase connection (two phases and one ground).
Where does the unbalanced load go? If I connect this equipment to two phases of a 120/208V panel (120 degree...
We're looking at buys several aftermarket power meters to monitor existing switchgear and came across the E-Mon D-Mon Class 3000 meters. They are good meters, but lack several features like PF, Harmonics, Data logging for Max Current / Voltage, etc. Trouble is, we can't find anything...
Must be harmonics.
Phase A: 145A
Phase B: 143A
Phase C: 158A
Neutral Current = ?((Ia²+Ib²+Ic²)-(Ia*Ib)-(Ib*Ic)-(Ia*Ic))
= ?((145²+143²+158²)-(145*143)-(143*158)-(145*158))
= 14A
This is all great input, thanks!
Current on the Neutral in the panel, correct. No neutral breaker :). The breaker is about 150A / phase loaded.
I can see 33A on a neutral being an issue, but how much is too much?
Just curious. I was reading a load report that stated there was a high neutral current on a 200A Main Breaker in a 120/208V panel. The current on the breaker was 33.6 Amps. Is that considered too high?
Thanks,
-Mike
