5 amp fuses

Hi
Just to add to the confusion .
when is a 35 amp fuse not a 35 amp fuse ?? When its a Joe Lucas fuse !
This is a serious question when you only have access to American fuses , and you use them in British wiring looms !!
A Lucas "35 amp fuse "is in fact marked as a 17/35 amp fuse , [the 17 rating is often in smaller type ]. It will handle a 17 amp load and fail at 35 amps .
An American 35 amp fuse is just that , a fuse which will handle a 35 amp working load and blow at a higher load . This has led to melted insulation and electrical fires in British cars . The rule of thumb is to install an American fuse rated at 1/2 to 2/3rds of the Lucas rating .
EG install a 10 amp American fuse to replace a 15 amp Lucas fuse and a 20 amp for a 35 amp Lucas fuse .
Cheers
RVW
 
ripvanwinkle said:
Hi
Just to add to the confusion .
when is a 35 amp fuse not a 35 amp fuse ?? When its a Joe Lucas fuse !
This is a serious question when you only have access to American fuses , and you use them in British wiring looms !!
A Lucas "35 amp fuse "is in fact marked as a 17/35 amp fuse , [the 17 rating is often in smaller type ]. It will handle a 17 amp load and fail at 35 amps .
An American 35 amp fuse is just that , a fuse which will handle a 35 amp working load and blow at a higher load . This has led to melted insulation and electrical fires in British cars . The rule of thumb is to install an American fuse rated at 1/2 to 2/3rds of the Lucas rating .
EG install a 10 amp American fuse to replace a 15 amp Lucas fuse and a 20 amp for a 35 amp Lucas fuse .
Cheers
RVW
Click to expand...

Ah, I heard that before many moons back (but had forgotten!) Good point and thank you for reminding us!
 
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