will i be able to run a 4g power wire to a distribution block and then have two 4g wires running to the amps? or do i have to run a 4g and two 8g?

tia.

-mikey

 

4G vs 8G really depends on how big of an amp it is. But, most amps should be ok with 8G. Unless it's like 1200 watts or something crazy like that.

 

I'd do 4g to the distro then 2 8g's if it were me..but either way is fine I think, unless - as was mentioned - you're carrying an unusually high load.

 

the amp RMS' are 300w and 500w.

i just dont want a bottle neck with the wiring... better to have more than need more, correct?

 

I would use the 4 to the block, it will handle the current better.
Then use the higher ones to your equipment.

 

Yup, for that amount of power 4g to the block and 8g to the amps would be fine.

 

I would like to add that I like to use the same gauge for the grounding as the main from the battery.

 

ok, now a fuse question.

40a and 50a for the amp fuses.

if i have the main power fused, will i need a distribution block with fuses?

if so, do i get a 40a and 50a fuse or can i get higher ampere fuse? can the fuses be different amperes or do they have to be the same? two 120a?

i would think if the main power line is fused, i wouldnt need more fuses at the distribution block, so why do companies offer this option?

 

If you know the fuse recommended for each amp, add them together to give you what you need to run at the main.
i.e. 20a +30a = 50a at the main.
For double protection, add fuses right before each amp rated for it if you want.

 

so a 90a main power line fuse and then a 40a and 50a at the distribution?