Q&A

Does a fuse go on positive or negative?

Does a fuse go on positive or negative?

The fuses are placed in the positive lines from the battery and close to the battery. If a fault occurs on the line between the fuse and the load the fuse blows and current flow stops. A ground fault on the return line is unlikely to cause any problems as there is no significant voltage on it.

Which wire is connected to fuse?

live 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 …

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Which side of the fuse is negative?

The fuse ‘to protect the radio/load’ has to be in the positive lead because of the grounding of the device chassis, and it’s negative terminal.

Is DC positive or negative?

In a direct current (DC) circuit, current flows in one direction only, and one pole is always negative and the other pole is always positive.

Does a DC adapter have a fuse?

The fuse, therefore, is required in case of a DC/DC converter failure that it cannot correct, as in the case of a serious converter failure that causes a short on the input. The fuse must be sized large enough so that it will not blow out under steady state conditions.

Where do we connect a fuse with live wire or 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.

Is fuse connected in neutral wire?

The fuse wire is always connected in the live wire of the circuit because if the fuse is put in the neutral wire, then due to excessive flow of current when the fuse burns, current stops flowing in the circuit, but the appliance remains connected to the high potential point of the supply through the live wire.

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Why are fuses on the positive side?

The fuse ‘to protect the radio/load’ has to be in the positive lead because of the grounding of the device chassis, and it’s negative terminal. If you mount a CB to any of the vehicle’s metal parts, it gets grounded. If you properly ground an antenna, the radio gets grounded through the coax braid.

Should I connect the fuse to the negative terminal of battery?

[Should I] connect the fuse to the negative terminal of the battery since it’s where the actual flow of electrons originate which is opposite to the conventional flow of current from the positive terminal? Forget about electron flow. It only causes confusion such as in your thinking.

Why do we need fuses in both terminals of the circuit?

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. Both positive and negative leads are in same vulnerability.

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Can you put a fuse on the negative side of a switch?

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. Tt won’t be “on” but if someone were to touch something they could get hurt as they now provide a path from “high” to ground.

Is it safe to have fuses on both lines of DC?

When DC is not earthed and supply is floating it is safe to have fuses on both lines. Both positive and negative leads are in same vulnerability. By chance even if +ve (or even -ve) is grounded the system will work.