2007-03-22 09:28:00 · 2 answers · asked by fano 1 in Science & Mathematics ➔ Engineering
I had a 6-ton A/C unit on my roof where I lived, and it required a 50 Amp breaker (240 volts) (It would constantly 'blow' a 40 amp breaker.)
A 240 VAC, 60 Amp generator would work, although you might need more starting current for the compressor, so maybe 70 Amp.
.
2007-03-22 09:34:14 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋
I'd say at least 15 kW; of course, you haven't told us the SEER rating, which would affect your choice somewhat. With a bad SEER rating of 10, your average load would be 7*12000/10 = 8400 W*hrs/hr or 8.4 kW. So why use a 20 kW generator? To handle the start up load. A 10kW generator probably just doesn't have the ummph to kick the compressors over at start up. A 15 or 20 kW genset would definitely handle it.
2007-03-22 16:38:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋