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Old 06-17-2021, 04:27 PM   #1
Almost There
 
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Join Date: Sep 2019
Location: Melbourne, FL
Posts: 80
Year: 2003
Coachwork: Thomas
Chassis: Saf-T-Liner MVP EF
Engine: Cat C7
Rated Cap: 29 (Perimeter Seating)
battery compartment/master cutoff question

Hi

Can anyone tell me what the circuit breaker is in this pic and what it is connected to? It has been removed not by me and I'd like to replace it. Can anyone give me a clue? It is hard to tell just by looking, i'm hoping someone has seen this before. It is a BUSS 90 amp with manual disconnect/reset.

Also, is it common to have lots of rust in the battery compartment? There is more rust there than about anywhere in the bus.

Thirdly, my master cutoff switch operates on the positive side instead of negative. i understand it is better-off on the negative leg. Is it worth redoing the whole thing for the protection of ecm/tcu from spikes?

thanks

Evan
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Old 06-17-2021, 05:14 PM   #2
Skoolie
 
Join Date: Oct 2018
Location: Central Alabama
Posts: 220
Year: 1998
Coachwork: Blue Bird
Chassis: TC/2000
Engine: 5.9 Cummins 12-valve
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Quote:
Originally Posted by stlthe View Post
Hi

Can anyone tell me what the circuit breaker is in this pic and what it is connected to? It has been removed not by me and I'd like to replace it. Can anyone give me a clue? It is hard to tell just by looking, i'm hoping someone has seen this before. It is a BUSS 90 amp with manual disconnect/reset.

Do you have a wheelchair lift? It look's like what I have on a Thomas with a lift.

Also, is it common to have lots of rust in the battery compartment? There is more rust there than about anywhere in the bus.

Is there a drain blocked or is it on the top and sides?

Thirdly, my master cutoff switch operates on the positive side instead of negative. i understand it is better-off on the negative leg. Is it worth redoing the whole thing for the protection of ecm/tcu from spikes?

Some feel that it is better on the negative but I have a Blue Bird Vision with a factory installed shut-off on the positive side. After market types can touch metal and cause arcing.

thanks

Evan
..............
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Old 06-18-2021, 03:57 AM   #3
Bus Crazy
 
Join Date: Nov 2016
Posts: 2,306
Acidic fumes from batteries are very corrosive over time.

There are acid-proof paints specifically designed for coating the inside of battery trays and boxes.
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