Experience with AdvDesigns FuzeBlock

[Twilight Error]

Originally Posted by SiouxsieCat

In the top image, it appears there is a line going up front with an in-line fuse coming out of the fuzeblock.
I'm not an electrician, but that is redundant and not really needed, right?

Cheers

That is correct. The lower value fuse will fail first, the higher value fuse doesn't *do* anything. Setting up two fuses in series doesn't offer any more protection than a single fuse.

Using two fuses in parallel allows you to pull more current, much in the same way twinning a water line will give you more output at the end of the pipe. IMO, if you've got an accessory pulling 30A (two 15A fuses), and it isn't a clothes dryer or electric stove, you're doing something wrong.

[AntonLargiader]

Originally Posted by SiouxsieCat

In the top image, it appears there is a line going up front with an in-line fuse coming out of the fuzeblock.
I'm not an electrician, but that is redundant and not really needed, right?

There's a lot of misunderstanding about what fuses do. The individual fuses protect the individual circuits, but they do not protect the upstream wiring in the event of damage to the fuzeblock itself or to the supply wire.

A fuse on the power supply lead protects the power supply lead and to some extent the upstream components (just the battery in this case) in the event of a short. So if the seat pinched the supply wire against the shock mount bolt and caused a short, the fuse would go first. Notice how the fuse is very close to the battery? That's well done; there is very little unprotected wiring in this installation.