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ViribusUnitis · 03-07-2009, 20:48

I was seeing a marine air 16000 BTU unit. That's 11 amps when it's running, and maybe 35 or 40 amps on start up. The mannufactor calls for a 45 amp breaker. Then you figure a 1500 watt water heater, that's 13 amps, give or take. Just between those two peices, your looking at 24 amps. And thats when everything is running nice and stable. If you've got the water heater heating up, and then the a/c kicks in, I would expect it to go way over the 30 amp rating of a cord.

Then you figure you'll have a 12 volt billage pump cycling from time to time. The possibility of a 12V powered head, or any of the other 12V stuff. I guess the battery bank might stabalize out the loading on the 12V, but still, those are going to be pretty decent hits on the battery charger.

I guess 30A might be enough at stable, but I would have been expecting the a/c to be triping the shore breaker all the time.

03-07-2009, 20:48	#3
ViribusUnitis Registered User Join Date: Jun 2009 Posts: 40	I was seeing a marine air 16000 BTU unit. That's 11 amps when it's running, and maybe 35 or 40 amps on start up. The mannufactor calls for a 45 amp breaker. Then you figure a 1500 watt water heater, that's 13 amps, give or take. Just between those two peices, your looking at 24 amps. And thats when everything is running nice and stable. If you've got the water heater heating up, and then the a/c kicks in, I would expect it to go way over the 30 amp rating of a cord. Then you figure you'll have a 12 volt billage pump cycling from time to time. The possibility of a 12V powered head, or any of the other 12V stuff. I guess the battery bank might stabalize out the loading on the 12V, but still, those are going to be pretty decent hits on the battery charger. I guess 30A might be enough at stable, but I would have been expecting the a/c to be triping the shore breaker all the time.