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  #1  
Old 01-23-2010
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JackandLiz JackandLiz is offline
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Default HOW I HOPE TO PREVENT A FIRE

Howdy, WOGers.

After seeing photos of the burnt left front bays of Randy Dupree's coach and Ron Marabito's coach, I decided to add some protection to the cable carrying 12 volts to the front of my coach. I wanted to put a fuse for this crucial power cable between the shunt panel and the cable. This shunt panel is in the engine compartment. I found the original fuse for the inverter mounted on the shunt panel. To my horror, having 45+ years in electronics, this fuse was wrapped in electrical tape and held in a pipe clamp.
I am attaching photos which will show the original inverter fuse mount and the original location of the 12 volt power cable on the shunt panel.

I purchased two fuse holders and three 250 Amp fuses(2 to use and 1 spare) from from Blue Heron Marine. I had a two foot long cable made to connect the fuse holder to the shunt panel. I did relocate the 12V power cable.

I mounted the fuse holders to the metal plate that shields the exhaust manifold. I am attaching photos which will show the new fuses, their mountings and the new cable.
Any questions? Sure hope this works.

Regards,
Jack
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  #2  
Old 01-23-2010
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tulipvendor50 tulipvendor50 is offline
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Default HOW I HOPE TO PREVENT A FIRE

Jack:
Very well done. Having the proper fuse for the job is the biggest trick. Certainly it seems that BB did do a bad thing with the installation of those fuses.
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  #3  
Old 01-23-2010
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Very nice job Looks more factory than factory, go figure Maybe there was more to the Wanderlodge bankruptcy than meets the eye...

I think we are all reviewing cable routing front to back, once again, Great job!!
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Old 01-24-2010
jnxmas jnxmas is offline
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Can someone tell me if there have been any electrical fires in 1979 thru 1985 model Birds.
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Old 01-24-2010
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I wouldn't think 250 amps would be enough to start an 8V?
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  #6  
Old 01-24-2010
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JackandLiz JackandLiz is offline
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Quote:
Originally Posted by DonB View Post
I wouldn't think 250 amps would be enough to start an 8V?
That Fused 12v power cable has nothing to do with the main engine.



Jack
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  #7  
Old 01-24-2010
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GregOConnor GregOConnor is offline
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you can start a fire with a 10 amp draw thru a 9 amp designed path. old appliances with compromised conditions make larger amp draws and exercise fuses to the limits. BB installed a bunch of self-resetting relays/circuit breaker. they do an injustice as you do not retain a clue that an appliance has issues when it tripped then reset the resettable while drawing too much amperage. the best method to protect from fire is to repair worn appliances and the wires that feed them. not only is the appliance amp draw rated so is the wire path to that appliance

Like your mounting location I think it was a mistake for BB to use a heat shield to mount wires. I see the plastic cover over your fuse holders catching fire then the big wire- wire crimps giving way to a ground short on the battery side of the fuse.
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Old 01-24-2010
Stephen Stephen is offline
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how would you start a fire with a 1 amp draw
1.the wiring has a built in safety factor
2 1amp does not create enough heat to melt the insulation


What jack and liz are doing is protecting the whole 12 volt subsystem
and to say that the crimps will fail is irresponsible, have you actually seem the crimps to judge whether they are safe or not
the plastic Covers were designed and put in place by the manufacturer
I would think they will withstand a fair amount of heat and will not burn unless exposed to a direct flame they would simply melt
the other wires seem to have withstood the test of time and they are attached to the same shield
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Old 01-24-2010
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I was refereeing to a Wonderlodge. cant say what the SOB BMC's have.
Greg
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  #10  
Old 01-24-2010
Stephen Stephen is offline
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thats Wanderlodge not wonderlodge and I was referring to the Wanderlodge

and I dont see fire problems with 37 sob bmc's
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