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Why are circuit symbols used when drawing electric circuits?
It is often necessary to wire crossing
Are all 480 Volt light fixtures 3 phase or are some single phase?
I do not believe any lighting fixtures of any voltage have ever been made to work off of three-phase circuits. Light Fixtures are always single-phase 2-wire circuits In the USA the standard voltages for branch circuits are: 120, 208, 240, 277 or 480 The light fixture must be rated to match whichever field voltage is being used. Some light fixtures are made multi-rated so they can be used on more than one circuit voltage
Can one use 1 circuit of a 3 wire plus ground 2 circuit cable as a GFI circuit with the other as a lighting circuit?
A GFCI can not be used on a three wire branch circuit. It has to be on a single two wire circuit.
If you overload an oulet by plugging into many things.whan can happen?
The "correct" answer is, wire in more circuits with more outlets. There may be several ways to work around the issue, but the best and safest is to add circuits rather than using plug strips and extension cords.
Are wire wound resistors used in parallel circuits?
Can be. Wire wound resistors might take more power, or offer better precision, or custom resistance values. Wherever, whenever those features are desirable, whether its a series or parallell circuit, a wire wound resistor might be used.
What is the right circuit break to be used for lighting circuits?
Usually 15A or 20A, but it depends on the wire used.
Can you run 14 gauge wire off 12 wire to a receptical?
No, you can never mix wire sizes in a circuit.
What is the smallest size wire that can be installed in a parallel permitted by the nec?
The National Electrical Code (NEC) permits a minimum wire size of 14 AWG for general lighting and receptacle circuits in parallel installations.
Can a single duplex receptical be wired for 120 volts and a second single duplex receptical be wired for 220 volts if they both reside in the same two gang electrical box?
Yes, the feeder will have to be a three wire cable.
How do you determine the number of branch circuit for lighting load?
An engineered set of blueprints will have all of the pertinent information about circuit loading and circuit numbers and panel balancing already calculated. If there is no wiring schedule on the print then you refer to the electrical code book and abide by the regulations that are set out for circuit loading and the amount of devices that can be connected to that circuit. Single family dwelling: multiply the number of square feet by 3. So a 2500 sq ft home times 3 = 7500 watts. Divide that number by 1500 for #14 wire circuits or 2000 for #12 wire circuits. 7500 divided by 1500 = 5 #14 wire circuits or if divided by 2000 + 3.75 or 4 #12 wire circuits. This would be for the lighting load and general use receptacles through out the home. I always lay my circuits out where a circuit only covers 500 sq ft of the dwelling.
How do you connect motor from battery?
There are two circuits on the battery and motor. One wire is take which have four ends. The wire is connected on the desired circuits.
What gauge wire do you use when wiring a house?
For branch circuits (receptacles, lighting, etc.) you would use 14 gauge wire if the circuit breaker is rated for 15 amps. For 20 amp circuits, you would use 12 gauge wire. For built-in appliances such as stoves, ovens, dryers and air conditioners, the wire size depends on the specific appliance and must be determined on a case-by-case basis. The incoming power to the house (service entrance) likewise must be calculated for each house and depends on the service size.
What wire is the commonwire 120 volt?
The most common wire used for 120-volt circuits in residential and commercial buildings is typically type NM (Non-Metallic) sheathed cable, also known as Romex. This type of cable consists of two insulated conductors (usually black and white) and a bare copper ground wire. The black wire is the hot wire, the white wire is the neutral wire, and the bare copper wire is the ground wire.
What number wire gauge for a single pole light switch?
For a single pole light switch, typically you would use 14-gauge wire which is commonly used for lighting circuits in residential settings. It's always a good idea to check your local electrical code requirements to ensure you are using the correct wire gauge.
What excatly is pendant lighting?
Pendant lighting is a choice of lighting in which the lighting actually suspends from the ceiling on a wire like fixture and then is usually concealed into a pendant covering.
How do you wire Resistors required for led combination circuits?
in series
When did NEC require 3 wire circuits in a home?
1960
