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10-22-2015, 11:14 AM | #1 |
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Circuit breaker? & Resistor unit Question
I have a Circuit breaker? and Resistor unit that I have a question about.
I don't have a question about the resistor but where the fuse usually is (32-39 i believe) there is a metal box, which I'm assuming is a circuit breaker. Is there an advantage to this design? Is there possible issues with them? What years were they used? Thank you |
10-22-2015, 11:29 AM | #2 |
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Re: Circuit breaker? & Resistor unit Question
Circuit breakers have the ability to re-set themselves, where-as when a fuse blows........well, there's no doubt the lights will not be operating again 'til the fuse is replaced. DD
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10-22-2015, 11:39 AM | #3 |
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Re: Circuit breaker? & Resistor unit Question
Just curious, how do they reset?
At what amperage do they cutout? |
10-22-2015, 11:41 AM | #4 |
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Re: Circuit breaker? & Resistor unit Question
I think by cooling down.
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10-22-2015, 11:42 AM | #5 |
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Re: Circuit breaker? & Resistor unit Question
They contain a bi-metallic strip that bends when it heats up and breaks the contact. When it cools back down, the strip straightens back out and re-establishes contact.
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10-22-2015, 11:53 AM | #6 |
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Re: Circuit breaker? & Resistor unit Question
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10-22-2015, 12:13 PM | #7 |
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Re: Circuit breaker? & Resistor unit Question
Disco driving!
Thanks guys, I guess to test to see if it works correctly I'll have to add amps till it overheats. |
10-22-2015, 03:21 PM | #8 |
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Re: Circuit breaker? & Resistor unit Question
Don't know the amperage for the CB off the top of my head, but it should be in the same range as the fuse was, it is protecting the same wiring.
Edit: The CB first appear in the wiring diagrams in 40, but don't have any idea when in the model year it was, late 1939 models or from the start of the 1940 models. Last edited by JSeery; 10-22-2015 at 03:27 PM. |
10-22-2015, 03:43 PM | #9 |
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Re: Circuit breaker? & Resistor unit Question
Mine (1939) calls for a 30 AMP fuse.
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10-22-2015, 06:02 PM | #10 |
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Re: Circuit breaker? & Resistor unit Question
The 39 Deluxe that I'm working on has the CB.
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10-22-2015, 06:16 PM | #11 |
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Re: Circuit breaker? & Resistor unit Question
On my '92 Explorer, the turn signal circuit kept blowing. Even had a mechanic look at it to see what was the cause. After the 3rd or 4th time, he said I could continue paying him $85/hr to find the culprit, or I could put in a circuit breaker for $10 or so. It's been about 10 years and still working like a champ.
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10-22-2015, 08:00 PM | #12 |
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Re: Circuit breaker? & Resistor unit Question
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