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Old 11-09-2007, 08:47 PM   #15
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I totally understand.

The cure (turning it off) is just too simple for me to risk.
Managing risk is a part of my business.

It's a personal decision for each of us.
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Old 11-10-2007, 12:28 PM   #16
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Originally Posted by lewster
Plus, when you full-time, what are you supposed to do with your fridge and all of the food in it? No modern MoHo has a 3-way fridge anymore that runs on 12VDC, plus, the huge amp draw is a great drain on the batteries. That leaves running on 120VAC from the generator, or LP while running. While I would run the gen in very hot climates to power up the roof A/Cs to keep the coach cool, I never did it to run the fridge.
Lew,

The standard setup for almost all B motorhome manufacturers including the Interstate is to have the three-way AC/DC/LPG refrigerator so you can run 12VDC on the road, LPG when boondocking, and 110VAC when plugged into shore power with a 30 amp service. The one coach battery is adequate for that. Air-conditioning is satisfactory from the van's normal engine cab air conditioner. The rooftop electric air conditioner is generally only used in the campground. Everything on my B Sprinter runs on 12VDC except the rooftop air-conditioner, the microwave, the 110V std outlets, and the Black & Decker coffee pot. The TV/DVD, all lights, propane furnace fan, LPG generator starter, CO2 detector, LPG detector, control panel lights, Fantastik fan, water pump, and ignition for LPG water heater all run off 12VDC via the coach battery and converter keeping up the battery charge when plugged into shore power or when the generator is running. Since the fridge is three-way there should be no reason to run it on LPG while on the road or LPG when plugged into shore power. I will use it on LPG when boondocking without shore power or during a lengthy stop of an hour or more during the day on the road.

The Interstate Sprinter B van is pretty efficient. The B van manufacturers tune their setups to generally get by on one coach battery mainly because there is little room for more otherwise. I get by with one AGM 95AH deep cycle battery that sits under the front passenger seat. Our spare tire is under the van. Some manufacturers mount the spare on the back and use the space under the floor for a couple of batteries. I don't know of anyone with a setup with more other than some do it yourselfers with three. Inverters to run 110VAC off batteries thus are rare in B vans other than some done by DIYers.

The Interstate is capable of traveling with two people maximum as it only sleeps two. Rarely would it be used for full-timing and it would be used mostly for touring and driving every day to charge batteries without the generator even when staying at campgrounds multiple days. There are some people who do full-time in Bs or travel over a long time but generally they seem to be single users and when a couple they seem to travel a lot and not stay in one place very long. I did meet one couple that were camp host at Bear Head State Park near Ely, MN for a full month. That was a rare surprise. They were itching to get moving at the end of the month. Bs are pretty confining just to live in.
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Old 11-10-2007, 04:01 PM   #17
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Just a follow up - A trip to Radio Shack this morning fixed the problem with a small converter. Thank you all for your help.
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Old 11-10-2007, 06:36 PM   #18
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Originally Posted by Davydd
Lew,

The standard setup for almost all B motorhome manufacturers including the Interstate is to have the three-way AC/DC/LPG refrigerator so you can run 12VDC on the road, LPG when boondocking, and 110VAC when plugged into shore power with a 30 amp service. The one coach battery is adequate for that. Air-conditioning is satisfactory from the van's normal engine cab air conditioner. The rooftop electric air conditioner is generally only used in the campground. Everything on my B Sprinter runs on 12VDC except the rooftop air-conditioner, the microwave, the 110V std outlets, and the Black & Decker coffee pot. The TV/DVD, all lights, propane furnace fan, LPG generator starter, CO2 detector, LPG detector, control panel lights, Fantastik fan, water pump, and ignition for LPG water heater all run off 12VDC via the coach battery and converter keeping up the battery charge when plugged into shore power or when the generator is running. Since the fridge is three-way there should be no reason to run it on LPG while on the road or LPG when plugged into shore power. I will use it on LPG when boondocking without shore power or during a lengthy stop of an hour or more during the day on the road.

The Interstate Sprinter B van is pretty efficient. The B van manufacturers tune their setups to generally get by on one coach battery mainly because there is little room for more otherwise. I get by with one AGM 95AH deep cycle battery that sits under the front passenger seat. Our spare tire is under the van. Some manufacturers mount the spare on the back and use the space under the floor for a couple of batteries. I don't know of anyone with a setup with more other than some do it yourselfers with three. Inverters to run 110VAC off batteries thus are rare in B vans other than some done by DIYers.

The Interstate is capable of traveling with two people maximum as it only sleeps two. Rarely would it be used for full-timing and it would be used mostly for touring and driving every day to charge batteries without the generator even when staying at campgrounds multiple days. There are some people who do full-time in Bs or travel over a long time but generally they seem to be single users and when a couple they seem to travel a lot and not stay in one place very long. I did meet one couple that were camp host at Bear Head State Park near Ely, MN for a full month. That was a rare surprise. They were itching to get moving at the end of the month. Bs are pretty confining just to live in.
Thanks for the heads-up on the 3-ways in the B vans. I run a Sprinter for my service van with a 150 amp alternator, but I would suspect that the chasis used for the conversions have the 200 amp version. Lots of juice out of that unit.
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Old 11-10-2007, 07:35 PM   #19
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Not Quite

Lew, for sure, my 2005 Interstate has the Dometic equipped for 120 VAC and LP. There is no 12 volt heater on the stack. I can't speak for the 2004, 2006, or 2007 models, but the one I bought is as I stated.
OK, now that we've rode this hobbyhorse far away from the original idea, and now that the problem has been solved, how's about we grab another one from the rack?
regards
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