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 Posted: 09-11-2019 04:43 am
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Esprit2

 

Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 573
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 The British/ Lucas fuses are rated for the current that will cause them to blow immediately.
The USA / BUSS fuses are rated for the current they can carry continuously.
There's approximately a 2:1 ratio between them.

A UK/ Lucas 35 amp fuse is roughly equivalent to a 17 amp USA / Buss fuse.
A USA / Buss 30 amp fuse is roughly a 60 amp UK/ Lucas fuse.
A USA / Buss 35 amp fuse is about a UK M6 bolt... ;-)

British . . . . ~ American
Lucas . . . . . . BUSS (AGC)
50 amp . . . ~ 25 amp
35 amp . . . ~ 17 amp
30 amp . . . ~ 15 amp
25 amp . . . ~ 12 amp
20 amp . . . ~ 10 amp
15 amp . . . ~ 8 amp
10 amp . . . ~ 5 amp
5 amp . . . . ~ _____
2 amp . . . . ~ 1 amp

Regards,
Tim Engel