Sage-Tips

Can you put a fuse on a negative wire?

While a fuse would open on the negative size just the same as on the positive side due to current flow, the position of the fuse is to maximize protection of the feed, load and connections. If the positive feed abraded just after the battery having a fuses on the return wire to the chassis wouldn’t be much use.

Can you fuse the negative side?

Yes. Typically the negative terminal is ground. So if you put the switch, fuse there (on the return path) then when the switch is open the whole circuit will be sitting at high potential.

Can you have a fuse on ground wire?

A couple of times I seen where some folks have put a fuse on the negative / neutral / ground wire. As a general rule, you should not do that!. Your electric return path needs to always be available.

What happens if fuse is connected to neutral wire?

The fuse wire is always connected in the live wire of the electric circuit because if the fuse is somehow put in the neutral wire in the circuit, then due to excessive flow of electric current when the fuse burns, current will stop flowing in the circuit, but the appliance will still remain connected to the high …

What happens if you connect negative to negative?

Caution: Don’t attach the negative cable to the negative terminal of the weak battery when jumping a car battery! This common mistake could ignite hydrogen gas directly over the battery. Battery explosions can cause serious injury.

Does fuse orientation matter?

It doesn’t matter which end of the fuse holder gets used for going to the battery and which goes to the jack. Fuses don’t require current to flow through them in a certain direction so either way is fine.

Can fuses go either way?

Expert Reply: It doesn’t matter which end of the fuse holder gets used for going to the battery and which goes to the jack. Fuses don’t require current to flow through them in a certain direction so either way is fine.

Does a switch go on positive or negative?

Technically, either way will work, although it’s more common to put the switch in the positive power lead. The reason is that components often have more than one path to ground, so putting a switch in the “primary” ground wire might not completely isolate the accessory from ground.

Does fuse position matter?

It doesn’t matter which end of the fuse holder gets used for going to the battery and which goes to the jack. Fuses don’t require current to flow through them in a certain direction so either way is fine. But typically line is the side that the power comes in on and load is the power going out.

Why fuse is positive and negative?

Fuses in both terminals are required and is connected only when the DC supply is isolated. Most of the control system supplies whether AC or DC will not be eathed. This helps to prove the fault tolerant. When DC is not earthed and supply is floating it is safe to have fuses on both lines.

Why fuse is not used in neutral wire?

The fuse in the neutral does not blow, because there is no current in the neutral. The only functional place to put a fuse is in the wire that always will carry current: the hot wire. If there are two hot wires (out of phase wires in 240V circuits in the US), you have to fuse both of them.

Where do we connect a fuse with live wire or with neutral wire?

Fuse is always connected to live wire. If fuse wire is connected to neutral wire instead of live wire then even when the fuse burns out, the appliance remains connected to the live wire and the current supply will not be disrupted due to over loading.

Why do we put the fuse on the negative wire?

Putting the fuse on the negative wire protects only the equipment, fuse in positive lead protects the equipment and the voltage source. If the black wire gets skined and shorts to ground,.

What is the difference between a wire and a fuse?

Aside from the physical limitations, a wire is sort of functionally replaceable by a fuse. Of course fuses are physically short and wires can be arbitrarily long. If you have to replace a short piece of wire, putting in a fuse both gives you conductivity and protection to overcurrents (as long as the fuse is properly rated)

What is a positive ground fuse used for?

On a vehicle there will be a fuse on the negative and positive leads for anything not using the chassis as the return/ground/negative lead. Well there are some uses of a positive ground but that’s rare outside of telephone gear.

What is the purpose of the negative terminal of a circuit?

Typically the negative terminal is ground. So if you put the switch, fuse there (on the return path) then when the switch is open the whole circuit will be sitting at high potential. So the switch and fuse go on the positive terminal.