are the fuse ratings on an amp how many amps it draws?

[mustanggt5330 10+ year member]

like my amp has 150amp fuse, the other one has 50 amp fuse. so are they drawing 200 amps. do i need a 200 amp alt.

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[mustanggt5330 10+ year member]

bump...

 

[93EXT 10+ year member]

lol, no.

 

[mustanggt5330 10+ year member]

how can you find out how many amps they draw

 

[pensacol 10+ year member]

By using an amprobe. Clamp it on and it will tell you how many amps you are pulling. Or you could do Watts x Volts = Amps, but it will be a little higher than that based on how efficient your amp is.

 

[squeak9798 5,000+ posts]

A good start is by determining current draw based on power output and efficiency.

 

[stuckinok 5,000+ posts]

A good start is by determining current draw based on power output and efficiency.

what he said

 

[lostdaytomorrow 10+ year member]

P = I*v

 

[wagon5.1 10+ year member]

aren't all fuse rateings totaled = max draw ?

thought thats how it was explained to me. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[dragnix 5,000+ posts]

aren't all fuse rateings totaled = max draw ?
thought thats how it was explained to me. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

i do believe it is max amp, so ur system will probably never reach that. But it can be deceiving as some manufacturers use internal fuses. I believe the Md3d from US Amps has this

 

[squeak9798 5,000+ posts]

aren't all fuse rateings totaled = max draw ?
thought thats how it was explained to me. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

Someone explained it to you incorrectly.

 

[ultimate157 5,000+ posts]

A good start is by determining current draw based on power output and efficiency.

+1

Find out your amp's efficiency, then divide the amp's RMS output by the efficiency (eg if its 75% efficient, divide by 0.75 .) Next divide by your car's voltage. This will give you the amperage draw.