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New Electrical Work
Electrical work ranges from the installation of new electrical components to the maintenance and repair of existing electrical infrastructure. It may also include wiring airplanes, ships and other mobile platforms.
4,938 Questions
How were the old three wire outlets for dryer and ranges wired before the four wire came about?
The hot wires were connected to the outside blades on the plug end. The neutral was connected to the center blade. The neutral wire was hard wired to the frame with a copper strap and the neutral was used as a ground conductor. With a four wire the copper strap is removed and a separate wire is used for grounding purposes from the frame of the device back to the ground bar in the distribution panel.
How many watts equals 480 volts x 217 amps?
To calculate the power in watts, multiply the voltage (V) by the current (I). In this case, 480 volts x 217 amps equals 103,920 watts or approximately 103.92 kW.
AWG stands for American Wire Gauge, which is a standardized system used in North America to denote the diameter of electrically conducting wire. It is commonly used to specify the size of wire in electrical circuits.
How do you Calculate electricity bill for 60 KWh?
To calculate the electricity bill for 60 kWh, you would multiply the number of kilowatt-hours (60) by the rate charged per kilowatt-hour by your utility company. The result will give you the total cost for that amount of electricity consumed.
How do roaches get into light fixtures?
Roaches may enter light fixtures through small openings or gaps around the fixture, such as where wires enter the fixture or through ventilation holes. Once inside, they are attracted to the warmth and can find shelter in the fixture. Regular cleaning and sealing any entry points can help prevent roaches from getting into light fixtures.
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.
If everything on the circuit is dead, I would start at the breaker box.
Start with the simple stuff -trip and reset every breaker individually, not just the suspicious circuit or just the main. Sometimes, a breaker trips -but not to the extent that the tab flips to "off".
If that doesn't work, leave the breaker on and, with a multimeter set to ACV, put one lead on the ground bar and the other on the screw head on the breaker. You should get a reading of 110V -if not 110V, then remove and replace that breaker.
If you do get a 110V reading, the problem is an "open" in the circuit. Think of a circuit as a chain and the outlets/switches are the links. If a link is not connected, the remainder of the circuit (everything after the open) will not work. Start at the breaker box and trace the circuit to each of its connections at the switches and outlets. Remove the outlet/switch covers and peek inside the box to make sure the connections are secure. You can inspect the circuit with the power on or off. If you do leave the power on, use extreme caution while you're probing around -you might just find the open circuit the hard way!
If you still don't find the open circuit, test each link (outlet/switch) separately, again starting closest to the breaker box.
No. If you look at your current main panel and look at the size of the mail breaker you might have 200A or so. Then if you add up all the breaker amperage ratings you will likely exceed the main breaker value. This is because the design of the various circuits takes into account the normal load on each circuit and expects that duty factors of each circuit will not be constantly at the maximum values. If you had a clamp-on amp meter you could easily determine how each of the current breakers was loaded under various circumstances.
How many amps can a 12 awg wire carry at 240 volts?
The voltage has nothing to do with the capacity of a wire to handle current. A #12 copper wire with an insulation factor of 60, 75 or 90 degrees C is rated at 20 amps.
How close can a sink be to a electrical panel?
There should be a minimum distance of 36 inches between a sink and an electrical panel to reduce the risk of electric shock or water damage. This spacing is typically required by building codes to ensure safety and accessibility for maintenance work on the electrical panel.
What size aluminum wire would replace a four gage copper wire?
A #4 copper wire with an insulation factor of 75 or 90 degrees C is rated at 85 amps. A #2 aluminum wire with an insulation factor of 75 and 90 degrees C are rated at 90 and 95 amps respectively.
What gauge wire should be used to run a 230v motor 90 ft away?
For a 230V motor running 90ft away, it is recommended to use at least 12-gauge wire to minimize voltage drop and ensure efficient operation. However, it is always best to consult the motor's specifications and a qualified electrician to determine the most appropriate wire gauge for your specific setup.
Wire size for an electric range?
The wire size for an electric range depends on the electrical load required by the range. Generally, a 40-amp double pole breaker with 8-gauge wire is sufficient for most residential electric ranges. However, it is essential to consult with a qualified electrician to determine the correct wire size based on the specific requirements of your electric range and local electrical codes.
How many amps does a 2000 watt 120 volt generator put out?
The formula you are looking for is W = I x E. I = W/E. A = W/V.
How many 90 degree bends can you have in one run of conduit from box A to box B?
NEC allows four quarter bends between junction boxes and conduit bodies for a total of 360 degrees. You can have more than four bends, but all of the degrees of the bends can not add up to more than 360 degrees.
How many watts do you need to run a 1.1 amp fridge?
Your refrigerator is an AC induction motor. It will draw constant current whenever it is on (after starting which is much higher). However the power that it consumes depends on the torque on the motor's shaft, which in the case of your refrigerator depends on the temperature difference between your freezer and the radiator coils on the back or bottom of the fridge. As time goes on, dust collects on these coils and power consumption goes up. The correct answer to this question is 'some fraction of 120 volts * 1.1 amps = 132 watts or less.' The rest of the 1.1 amps of current represents energy which is borrowed from the line and returned to it at a different time during the AC cycle. The ratio between current*voltage and actual power consumed is referred to as power factor. Some devices like lights and heaters have a power factor very close to 1 because they do not borrow power from the line. Induction motors and transformers have power factors lower than 1.
How do you turn off an electrical outlet?
There will be 'stop taps' for each of the services located somewhere in the premises. The water stop tap is usually just inside the front door - under the floorboards. The Electricity turns off at the meter - usually a big red switch. The gas supply is turned off by operating a large metal lever attached to the gas meter.
Your outside outlets should be connected to GFCI devices. If they are receptacles the downstream side of the receptacles is also protected. It sounds like one of these receptacles has tripped. Try resetting the bathroom one first and then check to see if the power came back on. Then try resetting the outside receptacle if it is a GFCI. The outlet in the garage is probably fed either off of the bathroom circuit or the outside receptacle.
What size in amperage circuit breaker should be used for a pool pump?
The size of the circuit breaker for a pool pump should be determined by the pump's current draw. The breaker should be sized to accommodate the pump's full load amperage with a 125% safety margin. Most pool pumps typically require a 15 or 20 amp circuit breaker.
How far can you run 8 awg copper wire?
A #8 copper wire with an insulation factor of 75 or 90 degrees C has a rating of 45 amps. The load amperage and voltage must be stated to give a voltage drop calculation.
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The answer requires more information i.e. what is the voltage how far do you want to run the #8 wire?
#8 wire is limited to carrying 24 amps per the National Electrical Code is it's carrying power for transmission from one point to another. It also exhibits a resistance of .682 ohms per 1000 feet so this resistance relates to voltage drop at the end of a piece of wire. Normally a run of 300 to 500 feet is no problem as long as you are prepared to have a little less current at the end of the wire.
The way the wire is run also has a great deal to do with the distance. If it's placed in a raceway (read conduit) by itself or with other conductors then the wire ampacity must be derated.
As you see, there's a lot to it. The best rule of thumb is that is you need 20 amps at a 1000 feet, use the next size wire or AWG #6.
How do you attach an outlet box to a solid concrete wall?
There are a couple of ways. Hardened steel pins can be shot into the concrete. These pins usually have a 1/4 x 20 threads on to which a nut can be applied. The other way and the most common is to carbide drill a hole in the concrete and insert a concrete wall anchor. There are many types of wall anchors so have a look in a hardware store to find the best type that will suit your situation.
If an outdoor outlet gets wet will it trip the gfi breaker?
Answer If it doesn't trip, then the logic sensor is bad and the whole thing needs to be replaced. A residential grade gfi is about five bucks and is relatively easy to replace. Turn the power off first.
This failure was common with older style GFCIs that could be surge damaged and then fail to protect human life. Newer designs will (should) not reset if a GFCI has been damaged.
What size wire will carry 52 amps - the service is 8 feet away?
For a distance of 8 feet and a current of 52 amps, a 6-gauge copper wire would be suitable to safely carry the load while minimizing voltage drop. It's important to adhere to local electrical codes and standards when selecting and installing wiring for any electrical system.
After wiring a 3 way switch one hears a buzz from inside the switch is this a problem?
Unless you trapped a bumble bee in the switch, it shouldn't be making any sound. Sounds like a loose connection somewhere in the box where switch is located. Is there any flickering in light? That would be a clear indicator. There also could be a faulty switch where the internal contactors are chattering because of corrosion or misalignment of contacts. To check this out turn off the power at breaker and pull switch and wiring out of box and then turn on the power and see if it is anything obvious (The bumble bee flies out). If it is still buzzing and you can't see why then turn off power again and remove one lead from switch. Put a wire nut or tape on bare wire so you don't get shocked. Turn off power and see if buzzing still there. Repeat for all other wires until buzzing stops. If all wires are off switch and buzzing still happens, do the same on the other 3-way switch in the circuit.
That's not a valid conversion.
1 erg = 1.0e-7 wattsecond
