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12-30-2020, 07:32 PM | #1 |
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Join Date: Oct 2010
Location: mt vernon, oh
Posts: 867
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Electric fan fuse or breaker
Installing elect. Fan...should i use a 40a fuse or a circuit breaker? Why?
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12-31-2020, 10:41 AM | #2 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Electric fan fuse or breaker
If you use a fuse and it blows you will have to change it. If you use a circuit breaker once it cools off it will reset on it's own.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
01-01-2021, 01:50 PM | #3 |
Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,703
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Re: Electric fan fuse or breaker
I'm afraid that if you blow a 40 amp fuse or a circuit breaker you have got bigger problems. I think a breaker might work better like Andy said if it was a one time deal, but that much draw would probably mean a seized fan motor or a dead short in the power feed wire to the motor. Here 's a couple of diagrams with a 30 amp fuse. One has a manual override switch and the other with a light also wired in to show the fan is running.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
01-01-2021, 05:34 PM | #4 |
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Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
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Re: Electric fan fuse or breaker
VetteVet,
Just buy the switch that has the light built into it.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
01-01-2021, 07:35 PM | #5 | |
Registered User
Join Date: Oct 2010
Location: mt vernon, oh
Posts: 867
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Re: Electric fan fuse or breaker
Quote:
I know how to wire one, im actually using dakota digital controller, just not sure if to use fuse or breaker |
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01-02-2021, 01:24 PM | #6 | |
Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,703
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Re: Electric fan fuse or breaker
Quote:
Good point Andy, but the light in the switch would only show the fan running in manual override, when the switch was on. I think whoever made the drawing wanted to show the fan on anytime it was running. I don't know if I'd want a light coming on and going off every time the fan cycled.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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01-03-2021, 08:28 PM | #7 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Electric fan fuse or breaker
The circuit breaker would just trip out and never reset I don't think in the case of the motor seized up.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
01-03-2021, 08:36 PM | #8 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Electric fan fuse or breaker
Quote:
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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01-05-2021, 01:10 AM | #9 | |
Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,703
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Re: Electric fan fuse or breaker
Quote:
I agree with you that the drawing is not very clear. I shouldn't have posted it without explaining how the light worked. I keep forgetting that not everyone understands how wiring circuits work. This is one of those times when the switching is done on the negative side of the circuit, Similar to the windshield wiper motor and the courtesy light in the cab. In this case it's the relay for the fan, via the temperature sensor, and the over ride switch. The OR switch doesn't need any positive voltage to trigger the fan relay. It does exactly what the temperature sensor does, only it does it manually. Why he shows the red positive wire to the switch is proof that the drawing is flawed. The red wire should go straight to the light to provide it with positive current, or it should go to 2 separate terminals on the switch.(single throw double pole)If he meant to show it with just the OR switch on, like you said. If you look closely at the the switch you can see that there is no terminal for the red wire there and it appears to be connected together. The ground for the light is provided by the black wire from the relay which is switched on by the temperature sensor or the OR switch. So the light will illuminate any time either one of those grounds the fan relay.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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