| Author |
Message |
Chuck Lott (68.158.3.109)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 7:31 pm: | |
I'd like to correspond with someone who is successfully operating a roof air while underway, powered by 12V alternator and inverter.
Email directly please 14bama@bellsouth.net |
mclough (65.142.134.146)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 9:23 pm: | |
after emailing him directly add it here also please. id like to know if it can be done and how.!!
i just had a 140 amp alternator put in .
morgan
outreachacrossamerica.com |
bowlingshoegiverouter (65.179.209.229)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 9:26 pm: | |
it ain't gonna happen...battery powered a/c... |
Don KS/TX (66.82.9.25)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 9:42 pm: | |
I beg to differ, and to inform you it works, and works damned well. I did it with a 24v Alternator, 2500 Watt inverter, Coleman 15000 btu roof unit. |
bowlingshoegiverouter (65.177.144.30)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 10:04 pm: | |
so....where is it |
dick egler (66.82.9.59)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 10:15 pm: | |
I'm doing it now in an Eagle. Heart 2500 inverter,4 L16's 12 volt. Using stock 50DN alternator. Probably will move to a 3 stage regulator.
Just installed engine driven air for driver. All that glass gets hot in front. Stays comfortable in front half of bus with one Coleman roof unit down the road.
Have not had any problems in 2 years with roof unit. |
DonTX/KS (66.82.9.58)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 10:28 pm: | |
Duh bowlingshoegiverouter, it is on the roof of course, where most all roof units are. |
LarryN-4106 (12.218.106.169)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 10:38 pm: | |
I am doing it in my 06. And I would like to respond to one comment. This is NOT "battery power A/C"......it is ALTERNATOR powered A/C!!!! |
Jerry (205.188.116.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 23, 2004 - 11:56 pm: | |
2500w true sine wave inveter draws about 100 amps of 12vdc power powering either one of my roof top ac's-- less than half the output of my 8V71 engine driven generator in my 06. Worked great for years |
Joe (66.74.53.243)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 24, 2004 - 12:30 am: | |
Is there potential to run two roof airs off the alternator/inverter set-up correctly ??
My GM alternator is large but not sure how of its actual capacity.
Has anyone done this??
How many watts needed for roof air?, etc.
Joe (wanting to do same) |
James Maxwell (Jmaxwell) (66.81.38.146)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 24, 2004 - 1:53 am: | |
If u have the 24v 50DN, enough batteries, and a 4000SW inverter, yes it is numerically possible. If u have the 12v 50DN, no. The alternator output would be marginal at best to keep up with the draw on the batteries. The 12v 50DN puts out about 3600 watts max; 24v puts out about 5200 max. Roof A/C's range from 1400-1700 watts, run and 2700-3200 start. A 4kw SW I think has a 6000 surge rating which would enable the starting of 1 if the other 1 was already running. Would be marginal for starting 2 roof airs simultaneously. Smaller inverter-no. Try it and let us know; I've never heard of it. |
G LANDRY (68.54.45.199)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 24, 2004 - 7:28 am: | |
I RUN TWO A/C AND REFRIGERATOR WITH 4000W AT 24V INVERTER JUST OFF BATTERY BANK FOR ABOUT FOUR HOURS THEN MY GENERATOR KICKS IN I USE 12 6V TROJAN SCRUBER BATTERYS. I HAVE USED THE ALTERNATER ON THE ENGINE RUNNING DOWN THE ROAD BUT RATHER EXERCISE THE GENERATOR. |
CaSteve (208.19.54.106)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 24, 2004 - 11:39 am: | |
Dittos on exercising the jenny( at 1/2 gal of fuel per hour), it's better to run it than not. I "can" run my front roof air on the DD alternator and for one reason, if I am ever traveling and the fuel tank level goes below the jenny fuel pick-up tube level(no gauge), I still have comfort until I fill up. It just doesn't make sense to me to have a 10K jenny and strain the brain of that expensive DD alternator. Steve |
shelly ward (64.12.116.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 24, 2004 - 12:16 pm: | |
That expensive oil cooled brushless delco - remy 24-volt 275 amp in whatever you have, is meant to put out 250+ amps 24/7 use it! Spare the 1/3 loaded diesel plant running 1 or 2 a/c down the road |
Johnny (63.159.129.37)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 26, 2004 - 11:28 am: | |
Isn't the alternator designed to power the huge coach A/C system for days at a time? |
FAST FRED (4.245.170.61)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, June 26, 2004 - 1:50 pm: | |
"Isn't the alternator designed to power the huge coach A/C system for days at a time? "
On most coaches a clutch powered the air cond compressor from the drive engine.Or a series of belts.
Yes, there were usually 1 or 2 80A+ blowers that operated ALL the time the coach was in revinue service , from the alternator.
Plus the drivers heaters , fans and a passle of inside & outside lights.
Nothing is "forever" but these big 50 series alts are as close as most will come to steam locomotive reliability.
They don't mind working,
and can boil out the batterys if not readjusted to RV use.
FAST FRED |