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Old 10-29-2015, 10:55 AM   #1
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Coach Battery fuse removal advice

Is there a proper method to remove the two main fuses in the supply lines from the coach without damaging the fuses, the fuse holders, or creating an electrical hazard? I want to be able to ensure that there is no draw on the batteries while the coach is parked without power or us having access to it to run the generator for about a month. In the absence of having a complete disconnect switch installed yet, I thought removing the fuses may be the least risk and involve the least use of metallic tools in the battery compartment. Any advice on safe methods or bright alternative approaches will be appreciated.
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Old 10-29-2015, 11:08 AM   #2
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Taking the fuses off should not be a problem, since 6~8 batteries have more then one ground connection post. If there is a load at the time, you may get a harmless spark at the moment of dis-connection. There may be some other
small wires connected to the batteries drawing a small current!!??
Siggy
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Old 10-29-2015, 11:12 AM   #3
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Anytime you put a wrench to a hot connection, you are in danger of causing a short. So you always want to disconnect the neg. battery terminal first.
Doing so reduces the opportunity for a short...just don't contact a positive terminal.

Following this rule, the easiest thing to do is just remove the negative battery cable...this assures zero draw.

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Old 10-29-2015, 11:20 AM   #4
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Quote:
Originally Posted by TinMan Trvlr View Post
Is there a proper method to remove the two main fuses in the supply lines from the coach without damaging the fuses, the fuse holders, or creating an electrical hazard? I want to be able to ensure that there is no draw on the batteries while the coach is parked without power or us having access to it to run the generator for about a month. In the absence of having a complete disconnect switch installed yet, I thought removing the fuses may be the least risk and involve the least use of metallic tools in the battery compartment. Any advice on safe methods or bright alternative approaches will be appreciated.
The easiest and most effective way to ensure the batteries are completely isolated is to remove the Negative Cable from the battery on each bank. (The House and Chassis)
The most convenient method would be to install a cut off device but simply removing the negative cable is as effective. By removing the Negative cable, you are in no danger of causing a short to ground.
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Old 10-29-2015, 01:33 PM   #5
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Quote:
Originally Posted by dennis45 View Post
The easiest and most effective way to ensure the batteries are completely isolated is to remove the Negative Cable from the battery on each bank. (The House and Chassis)
The most convenient method would be to install a cut off device but simply removing the negative cable is as effective. By removing the Negative cable, you are in no danger of causing a short to ground.
X2. If there are several negative cables remove all of them. If you have 6V batteries you will have to make sure you are removing the cables that go to ground, not the + lead of the other battery.
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Old 10-29-2015, 04:07 PM   #6
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You need to remove only the one Negative cable. That is the one that goes from the battery bank to the chassis. Do not remove all. It will just cause unecessary confusion when it comes time to reconnect.
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Old 10-29-2015, 08:50 PM   #7
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You need to remove only the one Negative cable. That is the one that goes from the battery bank to the chassis. Do not remove all. It will just cause unecessary confusion when it comes time to reconnect.
On our coach both the house power and the inverter have separate negative cables connected directly to the battery. If I didn't remove them I'd have some draw from the inverter, LP gas detector, etc.

I agree that interconnects between the batteries do not need to be disconnected.
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