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Power (current, voltage) as supplied by the utility comes in through a main fuse/breaker which is connected to a branch circuit fuse breaker and then goes out to the house's lights and outlets. In the US, the standard for general (those not feeding a specific load, like a stove or dryer) branch circuit is 15 amps (although sometimes 20 amps is used). The main fuse/breaker (i.e., the "service entrance") used to be 100 amps; I think it is now generally 200 amps (though I know of one house that has 600 amps). In addition, there are branch circuits for the stove, dryer, air conditioning, etc., all of which will probably be more than 20 amps. The thing to note is that the sum of all the branch circuits is greater than the ampacity of the service entrance. The difference between the two is based on the assumption that not all of the branch circuits will be drawing their full rated current at all times. The branch circuit breakers protect their wiring against overloads, and the main breakers protect the supply and panel against overloads. This same philosophy is duplicated in (generally) commercial buildings where there are sub-panels closer to the loads. There will be a master breaker for the sub-panel, generally located at the source panel for the supply to the sub-panel, but sometimes at the sub-panel itself.
What else can I help you with?
What wire in a circuit should contain the fuse?
The wire that connects the power source to the rest of the circuit should contain the fuse. This is typically the wire that leads directly from the positive terminal of the battery or power source. Placing the fuse in this wire helps protect the circuit in case of a short circuit or overload.
What will happen if a thick copper wire is used in fuse?
If a thick copper wire is used in a fuse then by definition of a fuse this device would no longer be defined as a fuse. A fuse in a circuit is used to protect the conductors feeding the load of that circuit. The circuit, if using a thick copper wire in a fuse, would then be considered as a non fused circuit.
Do you connect a fuse to the live wire or the neutral wire?
A fuse is typically connected to the live wire in a circuit. This is done to protect the circuit from an overload or short circuit, as the fuse will blow or trip and cut off the current flow if there is an issue.
What wire is the fuse always placed in?
The fuse is always placed in the hot wire (usually black in color) in a circuit. This is to protect the circuit from excessive current flow, which could lead to overheating and potentially cause a fire. Placing the fuse in the hot wire allows it to interrupt the circuit in case of a fault.
What happen if fuse is connected to neutral wire?
The fuse will be blown off in case of any fault. But the circuit will not be isolated because of the presence of fuse in nutral line. current will still flow and the line will be so dangerous.
Why the fuse wire necessary in a circuit?
It is a safety device. It is not an essential part of the circuit.
How do you change wire fuse for circuit breaker?
A circuit breaker does not have a wire fuse in it.
Why is a fuse wire necessary in a circuit?
a fuse wire melts when current passing through it exceeds a certain value as in overloading and short circuiting .this breaks the circuit prventing further current flow and damage ..
What wire in a circuit should contain the fuse?
The wire that connects the power source to the rest of the circuit should contain the fuse. This is typically the wire that leads directly from the positive terminal of the battery or power source. Placing the fuse in this wire helps protect the circuit in case of a short circuit or overload.
What is fuse what is it made up of?
A fuse in its simplest form - is simply a short piece of wire that is weaker than the circuit it is protecting. When the current flowing through the circuit exceeds the fuse rating, the fuse wire melts - breaking the circuit.
What will happen if a thick copper wire is used in fuse?
If a thick copper wire is used in a fuse then by definition of a fuse this device would no longer be defined as a fuse. A fuse in a circuit is used to protect the conductors feeding the load of that circuit. The circuit, if using a thick copper wire in a fuse, would then be considered as a non fused circuit.
What is the advantage of electric fuse in an electric circuit?
A fuse is intended to be a weak link of thin wire that goes in series with a circuit. If the current becomes too high for any reason, the fuse wire melts and cuts off the supply. Without a fuse, the circuit will heat up until something else melts, which might cause a fire. So fuses are necessary to prevent electrical fires.
Why does the wire from the fuse box to the head light switch burn up?
Check the headlight fuse that's INSIDE the box. If an oversized fuse has been put in the fusebox you will have problems with the wire overheating whenever there is a problem in the circuit. There is a short circuit (wire touching chassis ground) somewhere in the lighting circuit, but the wire is burning because an oversized fuse has been put in the circuit.
Do you connect a fuse to the live wire or the neutral wire?
A fuse is typically connected to the live wire in a circuit. This is done to protect the circuit from an overload or short circuit, as the fuse will blow or trip and cut off the current flow if there is an issue.
What wire is the fuse always placed in?
The fuse is always placed in the hot wire (usually black in color) in a circuit. This is to protect the circuit from excessive current flow, which could lead to overheating and potentially cause a fire. Placing the fuse in the hot wire allows it to interrupt the circuit in case of a fault.
How does a fuse prevent an overlode circuit?
A fuse contains a wire that will melt and break the circuit if too much current flows through it, preventing an overload. When the current exceeds the fuse's rating, the wire melts, interrupting the flow of electricity and protecting the circuit from damage.
What happen if fuse is connected to neutral wire?
The fuse will be blown off in case of any fault. But the circuit will not be isolated because of the presence of fuse in nutral line. current will still flow and the line will be so dangerous.
