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Electrical Wiring

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4,935 Questions

What is the purpose of insulation on electrical cables?

The function of electrical insulation is to resist electrical leakage. Shorting and personnel injury are effects of its failure to perform that function.

What color is the ground conductor?

Depends on what you are wiring. Green is a common color used for ground. Sometimes it is just a bare copper wire.

What is the diameter size of EMT conduit?

EMT is electrical metallic tubing. In the electrical trade there are nominal sizes expressed as a standard size. To answer your question you must state the conduit size in either electrical terms or in standard size terms to get a conversion size.

For example standard size 1/2" EMT has an actual diameter size of 3/4" and the 1/2"EMT connector for the 1/2" EMT conduit needs a 7/8" hole.


Likewise with 3/4" EMT the actual outside diameter is 15/16" and the 3/4" EMT connector needs a 1-1/8" hole.

Can a single pole switch replace a starter in fluorescent lamps?

No, a switch is used to control the circuit voltage that is applied to the fixture for turning the fixture on and off. The starter in the fluorescent fixture is used to start the current flowing through the filaments in the fixture's tubes. After a specific time, the starter heats up the circuit is opened and the current then flows through the fluorescent tubes.

What is the cable size for 90 kw motor?

Depends upon the voltage. The formula for amperage or (wire size) is Watts / Voltage. If the voltage is 220 volts, then the amperage would be over 400 amps. This would require a large wire size to run it. If it were 440 volts, the amperage would be 1/2 or 200 amps. That would require a smaller wire size. As the voltage goes up, the amperage goes down. At a thousand volts, the amperage would only be 90 amps. A wire gauge or size of a #2 would carry 90 amps for small distances.

Why is the electrical cord on the front of a toaster?

The Underwriter's Laboratories (UL Listed) who inspects home appliances for safety have instated new safety regulations requiring the cord to meet the toaster where the control panel is located (in the front) and requiring shorter cords. This information came from Hamilton Beach customer service.

Stereo wiring diagram for a 2005 dodge ram 1500 with infinity stereo?

2004 Dodge Ram 1500 Car Radio Stereo Audio Wiring DiagramCar Radio Battery Constant 12v+ Wire: Pink

Car Radio Accessory Switched 12v+ Wire: Brown/Red

Car Radio Ground Wire: Black/Dark Green

Car Radio Illumination Wire: Orange/Dark Blue

Car Stereo Dimmer Wire: Orange/White

Car Stereo Antenna Trigger: Yellow

Car Stereo Amp Trigger Wire: N/A

Car Stereo Amplifier Location: Located Behind The Glove Box.

Car Audio Front Speakers Size: N/A

Car Audio Front Speakers Location: N/A

Left Front Speaker Positive Wire (+): Light Green/Red

Left Front Speaker Negative Wire (-): Light Green/Dark Green

Right Front Speaker Positive Wire (+): Light Blue/Violet

Right Front Speaker Negative Wire (-): Light Blue/Black

Car Audio Rear Speakers Size: N/A

Car Audio Rear Speakers Location: N/A

Left Rear Speaker Positive Wire (+): White/Red

Left Rear Speaker Negative Wire (-): White/Black

Right Rear Speaker Positive Wire (+): Tan/Violet

Right Rear Speaker Negative Wire (-): Tan/Black

Why Metal halide fixture with a 175 w bulb and correct ballast could overheat?

Make sure you are using a metal halide bulb and the ballast is matched to the wattage on the bulb. These both must be correct.

How does an electric power company calculate electrical energy from electric power?

Electricity consumption is measured in Kilowatt hours, this is one unit of electric consumption and charged according to your supplier.

You have to know how many watts your devices consume.

This is sometimes written on the ID tag or plate, or you can use a meter in line.

Multiply this wattage number by the hours it is switched on and this will tell you how much it has consumed.

e.g. A toaster may consume 1000Watts = 1Kw, if you ran it continuously for an hour it would consume 1 unit of electricity. Toasters don't run for more than a few minutes, so would use less than 1 unit per operation.

3 mins = 0.05hrs Therefore = 0.05 of a unit.

A 100W light bulb would consume 1 unit in ten hours.

100W = 0.1 KW. = one tenth of a kilowatt, so ten times this would equal 1 Kw/h, Therefore ten hours.

Is electricity variable or fixed?

Electricity is the flow of electrons along a conductor.

What materials will not carry or conduct electricity?

Insulator materials will not carry or conduct electricity.

What are wiring diagrams. Give information about them?

Wiring diagrams are graphical representation of the electrical wring of a device or system. It is the documentation of the electrical system.

What is the wiring diagram for lazy boy lift chair?

A wiring diagram for a La-Z-Boy lift chair typically includes a power supply connected to a transformer, which converts the voltage to a level suitable for the chair's motor. The motor is linked to a control switch that allows the user to adjust the chair's position. Additional components may include limit switches and a battery backup system in some models. For a specific wiring diagram, it's best to refer to the manufacturer's manual or contact their customer support for detailed instructions.

What is the function of Voltage regulator in ride on mower?

Voltage regulator ensures a proper good quality voltage is applied to the ride on mower irrespective of the poor quality of input voltage. Of course voltage regulators have limitations too and work well with in a range of input voltage.

In a solenoid valve system if the voltage on the coil is 118 VAC and a continuity test of the solenoid and coil measures 80 ohms yet the solenoid will not allow water flow the most likely cause of?

There could be more than one reasons. Applied voltage may not be 118 volts. Solenoid valve may have been stuck mechanically. Solenoid coil could be faulty, partially short.

What is The visual inspection on portable mains drilling machines?

Check for broken wires, joints in cables, broken pin. Check the insulation quality of the device. Check IP ratings if any. Use it for only the intended purpose and environment.

Why is the ground wire hot at all outlet boxes on a particular circuit?

Most likely the ground (green) wire is mistakenly connected to hot instead of the hot wire (black) at the breaker panel!

Possibly you meant the neutral wire not the ground wire, in that case most likely the neutral (white) wire is mistakenly connected to hot instead of the hot wire (black) at the breaker panel!

In either case check all three wires in the breaker panel for that circuit to make sure they are all correctly connected! Black is hot, White is neutral, Green (or uninsulated in some cases) is ground.

Is a receptacle required in a hallway in a home that is 8 ft long?

Yes, an outlet is required in any wall over 2 ft long except a 2 ft wall behind a door.

What is the action of removing the insulation from wire?

The action of removing insulation for a wire is called stripping.