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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.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoFor normal home appliances we need single phase line. And the total load is supplied from that single phase. If the load reaches that condition that extra current is drawn with that phase wire , for the protection purpose we need fuse to save the phase wire.
AnswerBecause if it was placed in the neutral conductor, when it operates it will disconnect the protected device but will not isolate it from the supply and a shock hazard would remain even though no current flows. Incidentally, the fuse is placed in the 'line' conductor, not the 'phase' conductor.
Wiki User
∙ 11y agobecuase phase is carring voltage
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Why the fuse is placed in live wire only?
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.
How many wires come in from the weather head?
If single phase - 2 wire service > two wires If single phase - 3 wire service > three wires If three phase - 3 wire service > three wires If three phase - 4 wire service > four wires US residential service is usually single phase 3 wire service: Two hots and neutral.
What wire in a circuit should contain the fuse?
The live wire
How many terminals are in 3 phase?
There are usually 3 or 4 terminals. If only 3, then each wire is hot with respect to ground. If there are 4, then one wire is considered neutral.
Is a neutral wire in a 4 wire service?
Yes, it is referred to as three phase four wire service.
Why fuse is not connected in neutral wire?
Because the neutral wire only carries unbalanced currents. The hot wire carries full load currents. Answer for European SystemsThe above answer is only true for three-phase systems. In single-phase systems, the neutral carries exactly the same current as the line conductor. The reason for not placing the fuse in the neutral conductor is one of safety. For example, if the fuse were to blow due to, say, an overload current, then although no current could flow, the entire conductor would remain live and highly dangerous.
Why the fuse is placed in live wire only?
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.
Why is an insulator required for the body of a fuse?
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.
Do you get a shock when you touch the phase wire of single phase?
Only if you are grounded and provide a return path for the current to travel.
How does a wire connect to a fuse box?
The fuse box is constructed of a rigid plastic. Each individual fuse fits into its own slot. On the bottom side of the fuse slot there are provisions to hold a brass, aluminum, or gold pin. These pins get crimped or soldered onto the end of a wire, are inserted into the fuse panel, and are held in place by various types of "strain relief" usually clamping onto the wire insulation somewhere so no force is placed on the copper wire itself. The fuse fits into this pin tightly to make connection and supply voltage to a circuit. The main power wire to the fuse panel is usually a larger wire - 4-10 gauge and has an eyelet on the end. The eyelet fits over a threaded stud on the side of the fuse panel and supplies voltage to one pin of each fuse or relay.
Does negative ground wire have fuse?
NO. Usually the positive wire will have the fuse.
Why is it dangerous to replace a fuse with a wire that bypass the fuse?
Why is it dangerous to replace a fuse with a wire that bypasses the fuse
How does a wire fuse work?
A wire fuse works by only allowing so much electricity to flow through. When the electrical current goes above a predetermined rate the fuse breaks and stops the electricity from doing damage.
What is thicker a 8amp fuse wire or a 15amp wire?
The 15 amp fuse.
How do you change wire fuse for circuit breaker?
A circuit breaker does not have a wire fuse in it.
What is the difference between fuse wire and normal wire?
Fuse wire is designed to open under over current conditions. Just like a fuse.
How can you determine if a electric motor is 1 phase or 3 phase if there is no name plate?
Check the motor's terminal box. If there are three service input cables - such as red, yellow and blue - plus an earth wire, then it is a three phase motor. If there are only two wires plus an earth wire, then it is single phase.
