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rapid or slow blow fuses
Posted by: miatawnt2b ()
Date: November 27, 2022 05:38PM

Do you guys use rapid or slow blow fuses or a mix in the fuse panel?

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Re: rapid or slow blow fuses
Posted by: RobertC ()
Date: November 27, 2022 05:52PM

Just use regular fuses of the "era" for stock wiring - stock fuse panel.

Last for "decades" unless someone has messed up the wiring.

Did have a reverse switch (65 manual trans) fail and blow the fuse whenever you shifted the transmission into reverse - decades ago.

If you have added electrical items; then, you need to fuse the circuit(s) based on the draw of the added items.

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Re: rapid or slow blow fuses
Posted by: gbullman ()
Date: November 27, 2022 05:54PM

Not an expert answer but to best of my knowledge Corvairs and other contemporary GM cars used standard (not slow blow) fuses.


Gary
1966 Corsa Convertible
Northern New Jersey


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Re: rapid or slow blow fuses
Posted by: jjohnsonjo ()
Date: November 27, 2022 07:11PM

I put a slow blow in the heater motor circuit after I added a high capacity blower. Lots of surge current

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: rapid or slow blow fuses
Posted by: miatawnt2b ()
Date: November 27, 2022 07:17PM

jjohnsonjo Wrote:
-------------------------------------------------------
> I put a slow blow in the heater motor circuit after I added a high capacity blower. Lots of surge current


This is the exact reason I asked. I replaced my blower motor today, and the 10A that was in there blew right away. The only thing I had laying around was an 8.5A slow and a 15A fast. The 8.5 held until I started driving. The 15 seems OK.

-J

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Re: rapid or slow blow fuses
Posted by: wittsend ()
Date: November 27, 2022 07:57PM

Just remember the fuse rating is to protect the WIRE, not the actual device. So, yes, the fuse may not blow but the wire could get overloaded with accumulated heat from prolonged use.

That said, I have an HF Lathe that constantly blew the 4 amp fuse on start-up. I put a 5 amp slow blow in and never had a problem after that. I'd say check the wiring as the blower is used over time. I was just under my dash the other day and it seemed like all the blower wiring was 12 gauge so it should handle near 20 amps.

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***'61 Lakewood, a "Freebie" in hibernation for 27 years - In the process of applying CPR.***

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