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Author Thread: Amp fuse ratings v max.current draw.
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kuldip tangri
New member
Username: Tambk1

Post Number: 4
Registered: Apr-05
Posted on Thursday, April 21, 2005 - 12:29 pm:    Edit Post
A quick question..my amplifier mentions in the user manual that the maximum current draw is 75 amps but the amp has 2 30 amp fuses on board? Why 2 30 amp (60 amp total) when the actual manual mentions max.current draw 75 amps?
I know that test tones draw far more current than music but a little confused here.

Please could someone shed some light on this for me.
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GlassWolf
Gold Member
Username: Glasswolf

NorthWest, Michigan
USA

Post Number: 7651
Registered: Dec-03
Posted on Thursday, April 21, 2005 - 06:39 pm:    Edit Post
fuses don't instantly blow when they go over the rated current.
they blow at a specified amount of time per the percentage over the rated current. www.bcae1.com has a section explaining fuse ratings.

short answer is your amp probably won't be drawing 75A or if it does, it won't be for more than brief periods so 60A is plenty of current to allow normal operation.
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