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Should the neutral be fused?
A single fuse in the neutral conductor provides protection for neutral-to-phase faults, but not for phase-to-ground faults. This is one reason why a single fuse in the neutral is not permitted.
Why are fused neutrals a bad idea?
Having a device appear to be electrically dead while its components are electrically live can be dangerous; if the neutral were fused, an overcurrent fault could easily create that dangerous condition unless the fusing assembly ensured that an overcurrent condition would disconnect both hot and neutral simultaneously.
Why is fuse connected to live 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.
What is the line fuse?
A line fuse is simply a fuse the electricity travels through on the line. Line fuses are placed wherever a feeder taps off a main distribution line.
Can you put two fuses in parallel?
Therefore, putting two fuses in parallel will go against the very purpose of a fuse, i.e. having predictable behavior under the specified conditions. This means that, by doing that, you put at risk the equipment (and possibly its user) the fuse is intended to protect. Bottom line: DON’T DO THAT!
Why fuse is never inserted in neutral wire?
Because the fuse can disconnect the circuit only when the excess current flows completely through the neutral. Since, neutral is not a live conductor coming from the source, disconnecting a neutral line can only open the current path through neutral. But, the live phase still carries the charge.
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 …
Is fuse connected to the live wire?
A switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off.
Why is this switched power inlet fused on both load?
European 230VAC single phase systems (phase and neutral) where only one fuse is required and there are likely available inserts that bypass one fuse and just leave the single fuse in the hot (live) wire. If this type of fuse carrier isn’t available for this switched-inlet then this bullet answer doesn’t apply.
Can a fuse in the neutral leave an appliance unpowered?
A fuse in the neutral can leave the appliance in an “unpowered but live” state after clearing a live to neutral fault which is not especially desirable.
Is the neutral fuse redundant when double fusing?
If double fusing is employed, the equipment is protected against both faults, but the neutral fuse is redundant for phase-to-neutral faults, and inoperative for phase-to-ground faults. The only condition where fusing both phase and neutral conductors yields non-redundant protection against both faults is where polarity reversal is possible.
Why do you need a fuse in a neutral conductor?
In accordance with Kirchoff’s Laws, the current in the neutral goes down, not up. Hence, the over-current does not occur, and a fuse cannot provide protection). A single fuse in the phase conductor provides protection for both kinds of faults.