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Old 06-14-2016, 06:24 PM   #1
NowhereFast's Avatar
Join Date: Mar 2016
Location: Sarasota, Florida
Posts: 159
Year: 1995
Coachwork: International
Chassis: Carpenter
Engine: d466 mechanical
Generator Heat in Storage Bay

On my passenger side I reinforced the storage bay, and vented.
It houses my 500 AH battery bank, my 3000w aims inverter/charger, as well as my 120amp box. On the exterior of the door I have a 30amp inlet for shore power.
I was going to put a 5000w onan in, but got rid of the thing as I spent nearly a month teaching myself how to repair it and grew to hate it.

I got ahold of a 3100w Champion Inverter generator with 5hrs on it for $400 at a garage sale from a retired guy here in FL. It's got a 30 amp plug on it perfect for quick connecting.

My AC load is powered through the inverter, with solar/alternator doing most of the charging, but would plug in the gen if needed.

My big QUESTION is the heat from the generator, now I have a good amount of money in this compartment, and I run a fan off an 110 outlet in the inverter to cool it down as well. But I don't want to overheat anything! If i separated the compartment with a metal wall with some insulation would that help?

My only other solution is: because my back 8 feet of the bus chassis is lowered and with air ride (we used for 3 2500 pound horses to walk in) I can put the generator back there and run my rooftop AC to a 30amp box and run the gen while driving.
TO charge to batteries when boon docking I guess I could wheel the generator out to the 30amp inlet by the storage bay. Maybe weld a box on wheels with a chain to the bus to fend off some pesky raccoons?

Nowhere Fast - Sarasota, Florida
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Old 06-15-2016, 11:14 AM   #2
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ol trunt's Avatar
Join Date: Apr 2012
Location: So Cal
Posts: 1,696
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
N F,
"If i separated the compartment with a metal wall with some insulation would that help?"

That is a sure fire recipe for disaster. The one thing these inverter generators can't stand is heat. Even if the engine were to survive, the generator head will over heat, melt the insulation on the windings and fail--thats if the computer doesn't fail first. It takes a whole lot of air to keep a generator happy, so if you can devise a way to roll the genny out when you need to use it will have a longer life.

Having preached all that, I do have my 3K inverter genny in a compartment and so far so good. Of course I added both a pusher and a puller fan, both thermostatically controlled and an over temp shut down. I also removed the exterior casement and relocated the computer and operating electronics to the inside of my bus to help control the heat load. Jack

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