Fuse size

[EnvEe 02 10+ year member]

I just got a Fused Distro. block from Knu Konceptz to wire up my two amps. Im not sure what fuses to use for the d-block tho. I'm running a RF Power 551s and a RF Power 501bd. What size fuses should I run?

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[Lakota 5,000+ posts]

Do your amps not have on-board fuses?

 

[EnvEe 02 10+ year member]

nope...

 

[ultimate157 5,000+ posts]

Reading the owners manual off the RF website:

The 551s specifically says it needs a 50A fuse, but the 501BD manual only gives the current pull (30A on music and 50A on sine waves...) So a 50A fuse should be find with the 501BD if you'll never be playing sine waves on full-tilt volume.

 

[worldwideweapon]

is this the same for the ANl fuses in the distro. block?

 

[ultimate157 5,000+ posts]

is this the same for the ANl fuses in the distro. block?

don't understand your question ... All fuses are equal, different types of fuses can handle higher loads (AGU handle up to 80amps, mini-anl somewhere in the 150a range, etc)

 

[EnvEe 02 10+ year member]

http://www.knukonceptz.com/productDetail.cfm?prodID=KNF-12

Thats what I need the fuses for. Sorry for the confusion.

 

[ultimate157 5,000+ posts]

http://www.knukonceptz.com/productDetail.cfm?prodID=KNF-12
Thats what I need the fuses for. Sorry for the confusion.

No confusion, I have the same block ... get two 50A fuses.

 

[EnvEe 02 10+ year member]

would i be better off going with bigger fuses or would it not make a differance?

 

[ultimate157 5,000+ posts]

would i be better off going with bigger fuses or would it not make a differance?

Since your amps do not have internal fusing, you need to fuse externally to protect the amplifiers. Your main fuse should be 150A (for 4awg) or 300A (1/0awg)