Fusing 80 amps

[cleansoundzz 10+ year member]

Is 80 amps of fusing good for 1000 watts? I know the rule of thumb is to take the voltage times the amps and that gives a true estimate but is this really true?

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[BrownVanMan 10+ year member]

80x13.5= 1080

1080*.80 (for a 80% efficietcy(sp?) class D) = 864 watts roughly

 

[kramer_212 10+ year member]

when i first seen the title, i got a little excited.

then i got here

nothing but dissapointment. 80 should be fine, but i would just put 100 in there.

 

[akheathen Premium Member]

rule of thumb is 1a=10w.... it's not definate, but pretty reliable for most cases

 

[LosIsATool 5,000+ posts]

Rule of thump is to fuse to the wire in the front, not the amp. You want the least amount of resitiance possible. But you still want to protect from the wire flaming up

 

[Julian 10+ year member]

In all honesty.. I don't use fuses to prevent x amount of current going through.. I use them to keep my car from catching fire..

 

[Sonic. 10+ year member]

80x13.5= 1080 1080*.80 (for a 80% efficietcy(sp?) class D) = 864 watts roughly

Good stuff !//content.invisioncic.com/y282845/emoticons/clap.gif.178cba2c538c68e720c727fcb024b19c.gif

 

[goingdef 10+ year member]

Rule of thump is to fuse to the wire in the front, not the amp. You want the least amount of resitiance possible. But you still want to protect from the wire flaming up

This^^^ just because theres a minimum fuse rating for the amp doesn't mean thats the rating for the wire.

 

[akheathen Premium Member]

lol, yah, that, too, but not the original question. never fuse any higher than what the wire size can handle. technically, the amp fusing size is to minimize the extent of majic smoke, to smoke, not flames, inside the amp itself.