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Definition from the National Electrical Code Article 100:
Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply and the final branch-circuit overcurrent device.
Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
What else can I help you with?
What is one and half breaker system in electrical lines?
One and half breaker system is an improvement on the double breaker system to effect saving in the number of circuit breakers. For every 2 circuits, 1 spare breaker is provided: Two feeders are fed from two buses via their associated circuit breakers and these two feeders are coupled by a third circuit breaker which is called tie breaker. During failure of any of the two feeder breakers, the power is fed via the breaker of the second feeder and main breaker (tie breaker).
What is difference between to busbar and feeder?
The busbar is used as a conductor and is used as a connection between the parallel and the feeder. The feeder is the supply, and it handles the relays.
What is difference between feeder and grid?
In an electrical power transmission system: the grid is what the feeder feed into.
What is a function of neutral wire?
to complete the circuit and back to power supply
How should the feeder wires to a subpanel from the main panel ideally be protected?
Sub panel feeder wires are run just the same as any of the circuit wiring in the house. The sub panel is just another load circuit. Make sure that the correct wire sizing is done to feed the sub panel. It can be run behind wall board. If run on the bottom of the floor joists it is best to nail a board to the underside of the joists and then staple or strap the cable to it. If it is below the five foot level from floor grade and on the surface it must be mechanically protected until it rises above the five foot level.
Is the trolley busway considered to be a feeder or a branch circuit?
Feeder because the trolley will have overcurrent protection. Branch circuit is the final OCD to the load.
What happens if there is a break in parallel circuit?
If the break is in either the feeder or return line, the circuit will become open and the circuit will cease to function.
Where is a Bus bar in a circuit?
Where there is an electrical connection required from one feeder to many feeder , then you need a reference or grid from where the loads can be distributed.
What are the defects if the bulb didn't glow?
Feeder circuit voltage has been turned off, internal circuit fuse could be blown or filament in bulb burned out.
Is the circuit wiring between the motor starter in a motor control center going to the equipment disconnect with a circuit breaker in it a feeder or a branch circuit?
The terminology for a feeder is any wire that is coming into a device (it feeds the device with power). A feeder will be the wire coming into the disconnect and also the wires going into the motor will be called feeders. Even the wires coming into the MCC will be termed feeders. Branch circuits are circuits that usually originates at the main distribution and spread outward to their respective loads. Branch circuit terminology encompasses all of the equipment in the circuit that is connected from the overload device to the field load device.
What is the function of an LBB relay?
A local breaker backup relay is used to check the operation of distribution circuit breakers and to trip the feeder circuit breaker if the distribution circuit breaker fails to trip on an overload.
When you have multiple circuits connected to a site the entire circuit is known as a what?
When you have multiple circuits connected to a site, the entire circuit is known as a "distribution circuit" or a "feeder circuit." These circuits distribute electricity from a central source to various points of use within the site.
What is hi potential test in HT feeder?
high-pot tests send high voltages through a circuit to see if the circuit can possibly conduct to other branches. UL would use this to certify circuit safety
What is electrical feeder?
Feeders are commonly used to supply power to or from a radio antenna. A feeder can be a pair of parallel wires with closely controlled spacing (twin-wire feeder), or a single wire inside a hollow cylindrical conductor (coaxial feeder. <<>> In Canada the electrical term "feeder" is usually used incorrectly as a substitution for the terms wire or conductor. It is correctly defined is, any portion of an electrical circuit between the service box or other source of supply and the branch circuit over current devices. In the U.S. of A, a feeder definition taken directly from the National Electrical Code: All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.
What are all of the conductors between the service equipment and the final branch circuit?
The conductors between the service equipment and the final branch circuit include service conductors, feeder conductors, and branch circuit conductors. Service conductors connect the utility service to the service equipment. Feeder conductors distribute power from the service equipment to the panelboard or distribution board. Branch circuit conductors then carry power from the panelboard to individual outlets, fixtures, and appliances.
Acceptable voltage drop for 3 phase 415 volt motor?
The voltage drop should not exceed 3% on a feeder or branch circuit.
What condition results anytime the human body becomes part of an electrical circuit?
The condition that will result anytime the human body becomes part of an electrical circuit will be an electrical shock. As the neutral side of a load is grounded all a person has to do to become part of the circuit is touch the "hot" feeder side of the circuit and any grounded metallic object that forms part of that circuit.
