So that the live wire is isolated when the fuse blows. If a fuse was placed in the neutral, the equipment would still be live when the fuse blows.
The live wire
You connect the fuse to the live wire as it is the one with the potential difference of 220V and in case of short circuit current will blow out here
Suppose there is a fuse which is connected to a live wire and it breaks some day because of excessive power supply. The light goes off because of that. You think that there is no power supply, but actually the neutral wire is taking current towards you. You carelessly try to repair the fuse, and you get a shock. Thus, neutral wires are not preferred in fuse.
The fuse is place in the live wire so that under fault conditions the supply is cut off but the equipment is still connected to the neutral wire. If both wires were fused, there would be a 50-50 chance of the one in the neutral going first, which could leave the equipment still connected to the live wire and thus a further potential danger.
The black wire originating from a breaker box or fuse box is the live wire. However, in certain cases, the grey (or white) neutral wire can also be live. For example, the black wire may feed a lighting outlet, and if the neutral wire is broken on its way back to the neutral bar in the panel, then the neutral wire from the lighting outlet will be hot, because there is an electrical path from the black wire, through the light, and to the neutral. The point is, always check with a voltmeter before assuming the white or grey wire is not live.
The live wire
because current flows through live wire
You connect the fuse to the live wire as it is the one with the potential difference of 220V and in case of short circuit current will blow out here
Purpose of the fuse is to save circuits from the damage due to high current and voltages caused during fault conditions. These faults affects the live wire. So fuses are kept there. Morever other parts such as ground, do not need this protection, since these high voltages gets automatically earthed.
Same side as the fuse.
Suppose there is a fuse which is connected to a live wire and it breaks some day because of excessive power supply. The light goes off because of that. You think that there is no power supply, but actually the neutral wire is taking current towards you. You carelessly try to repair the fuse, and you get a shock. Thus, neutral wires are not preferred in fuse.
A fuse should be connected in the live wire, before reaching the appliance.
To fix a burned wire that is plugged in at the fuse box under the Battery sign, the wire will have to be removed and a new one soldered in place. Before doing this, find the cause or overload that caused this wire to burn in the first place. It could be that a fuse of too high an Amp was placed in the fuse box by mistake.
The fuse is place in the live wire so that under fault conditions the supply is cut off but the equipment is still connected to the neutral wire. If both wires were fused, there would be a 50-50 chance of the one in the neutral going first, which could leave the equipment still connected to the live wire and thus a further potential danger.
The wire element of a fuse is ONLY effective if it is connected to each end as the only metallic connection. The insulator is required to hold the wire element, and so that people can install and remove the fuse.
Red goes to a switched live i.e one that is only live when the ignition is switched on. Yellow goes to a permanent live i.e one that is always live whether the ignition is n or not, like the cigarette lighter, and maintains the station configuration memory. However, a modern car should have a pre-wired Din connector and a local motor factor will have the corresponding universal adaptor for your radio; connect colour ro colour (inc speaker wires) and plug it in !
NO. Usually the positive wire will have the fuse.