Are fuses connected to the live wire?
The fuse or circuit breaker must be connected in the live wire side of a domestic circuit to ensure that it keeps high voltage from reaching the user, or surroundings, if a fault develops.
Why the fuse and switch must be on live wire?
Fuses must be fitted onto the live wire so that when it blows, it will disconnect (isolate) the appliance from the high voltage live wire. (If the fuse is placed in the neutral wire, the electrical appliance is still connected to the high voltage live wire even when the switch is opened.)
Where do the constant and switched fuses live?
We’ll refer to cold circuits, or circuits that are only live when the engine is running as switched in this tutorial. Inside your fuse box, these constant and switched circuits tend to live right next to each other, with each circuit protected by an individual fuse.
What kind of current does a fuse need?
If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit. Fuses in plugs are made in standard ratings. The most common are 3 A, 5 A and 13 A. The fuse should be rated at a slightly higher current than the device needs: Circuit breakers act as resettable fuses.
Can you add a circuit to a domestic fuse box?
Electrical work in special locations is notifiable under part p of the building regs. Best advice is consult a qualified electrician. Post up your location we will probably have a member near you. You can’t add a new circuit unless you’re qualified and registered. You’ll need someone in to do this for you I’m afraid…
How are cold circuits protected in a fuse box?
We’ll refer to cold circuits, or circuits that are only live when the engine is running as switched in this tutorial. Inside your fuse box, these constant and switched circuits tend to live right next to each other, with each circuit protected by an individual fuse. The fuse serves as a “test point” to determine which type of circuit it may be.
We’ll refer to cold circuits, or circuits that are only live when the engine is running as switched in this tutorial. Inside your fuse box, these constant and switched circuits tend to live right next to each other, with each circuit protected by an individual fuse.
Electrical work in special locations is notifiable under part p of the building regs. Best advice is consult a qualified electrician. Post up your location we will probably have a member near you. You can’t add a new circuit unless you’re qualified and registered. You’ll need someone in to do this for you I’m afraid…
Why are fuses still used in electrical wiring?
Over 100 years later, fuses are still used to protect electrical wiring and equipment from damage due to surges and overload conditions. If you think that the fuse predated the circuit breaker by decades, you would be right, sort of.
We’ll refer to cold circuits, or circuits that are only live when the engine is running as switched in this tutorial. Inside your fuse box, these constant and switched circuits tend to live right next to each other, with each circuit protected by an individual fuse. The fuse serves as a “test point” to determine which type of circuit it may be.