Fuse and relay questions

[velodyne82]

hi sifus,

wat is the fuse value to use if my amp can pump out 60w(rms)/ch (120w/ch max)??

and wat value to use for my hu. it comes with a 15A fuse at the rear.

do i hav to use relay for my entire ICE???

pls advise....cheers

 

[howiechoo]

but u never state wat's in ur ice..then how we know?

 

[appleyard]

with a power like that you dont need to spend on fuses.

What do you mean relay the entire ICE?????

 

[Kippo]

hi sifus,

wat is the fuse value to use if my amp can pump out 60w(rms)/ch (120w/ch max)??

and wat value to use for my hu. it comes with a 15A fuse at the rear.

do i hav to use relay for my entire ICE???

pls advise....cheers

how many channels u have in ur amp? 2? 4?

just do rough estime i.e P = IV i.e P=power, I=current & V=voltage.

say its a 4-channel amp i.e 60w x 4 = 240W

so I = P/V = 240 / 12 = 20A.

so any 20amps fuse or higher will do. It is not meant to protect the amp but to prevent a short circuit from burning ur car eg. if the power cable suffer insulation damage and touch the car body which is -ve terminal.

you only use relay if you are going to use more than 2 amps. It is mainly due to current supply from the HU remote turn ON may not be sufficient to switch ON more than 2 amps.

since ur HU has a fuse already, no need to add another fuse. It will be overkill.


dont get too exited with fuses. and read more about it since i think u have a wrong understanding about its ACTUAL purpose.

cheers.