[Spridgets] Fuses

Peter Caldwell peter at nosimport.com
Thu Feb 14 08:32:28 MST 2013


It's Twue!  It's Twue!

if you had an old original Lucas fuse, the paper inside said "17A continuous"

Peter C

At 09:24 AM 2/14/2013, John Farley wrote:
>Somebody just told me that he ran across information that UK (Lucas) and
>USA (BUSS) fuses are *not* interchangeable.This is because they use
>different rating methods.  The UK, Lucas fuses are rated for the surge
>(peak) current that will cause the fuse to blow NOW.  The USA, BUSS fuses
>are rated for the current they carry continuously.  This info. went on to
>say that you should never install BUSS AGC 35 amp fuses to replace Lucas 35
>amp fuses in vintage Britcars because the wiring will melt before the fuse
>blows.
>
>It said that the UK (Lucas) 35 amp fuses are actually rated at 17 amps
>"continuous" / 35 amps "surge".  If you substitute a USA (BUSS) fuse, one
>that is rated 17 amps, is roughly equivalent.  You should also only use
>BUSS AGC fuses that have a 32V rating (not 250V).
>
>Has anybody else heard about this?  It it accurate?
>
>Thanks,  John
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