When wiring a power cable to your car battery, should you always put a fuse close to the battery or does it matter if you don't use one?
you don't have to but its highly suggested you do, it will save your amp if anything happens
You should always put a fuse close to the battery. Here's why: The job of the fuse is to protect the wire between the battery and the amplifier. If that wire should happen to touch a metal component in the vehicle (pinched under a seat bracket, for example, or worn through against a sharp edge of metal in the firewall) then it would cause a short circuit. If you have a fuse near the battery, then it just blows the fuse and stops the current flow. If you don't have a fuse, current will flow until the wire overheats. When the wire is damaged, it will damage anything it's next to: vehicle wiring, carpet, seats, your amplifier. It's not hard to cause very extensive damage to your vehicle from a melting amplifier power wire. A fuse is a very inexpensive way to prevent very expensive damages in the event of a short circuit. To be effective, the fuse needs to be between the battery post and the spot where the wire is shorted. That's why you should place the fuse as close to the battery as possible. I personally would never, under any circumstances, connect a wire to a vehicle battery without the appropriate size fuse or circuit breaker.
depends, if you don't care about what you are wiring up, then no you don't need to, the fuse is only there to stop a surge too strong for your equipment. usually your battery won't send out surges too strong but its possible if your alternator acts funny
white is often you independent conductor. green is often the kit grounding conductor. black is a warm conductor. i think of the bare wrap is an kit grounding conductor for the twine. it is there incase somebody have been to place a screw or puncture the cable in some incorrect way. a screw penetrating the twine could hit the bare first, then it may hit the nice and snug cord. the bare preserve could carry the present all of the before to the panel and trip the breaker instead of the present dealing with your physique.
You should Always se a fuse just for safety just not to damage what you are wiring that's all