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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
Can you use a 400W high pressure sodium bulb in a metal halide ballast?
No, the ballast has to be matched to the lamp. 250 watt ballast, 250 watt lamp. Also be sure to match the lamp type to the proper ballast even though the wattage is the same. HPS ballast to HPS lamp, Metal halide ballast to metal halide lamp and mercury vapour lamp to mercury vapour ballast.
What size wire for 30 amp breaker 240 volts 100 feet?
That distance you are going to have to install a sub-panel and run AWG # 4 wire and even then you will have a voltage drop of 7.45 volts giving you 232.55 volts at the sub-panel which is acceptable.
What size amp circuit breaker should be used for a wall oven?
The electrical current requirements of a wall oven can vary, depending on the heating elements used by the manufacturer.
To determine the current use, refer to either the operators manual, or the service tag.
The service tag may list the power consumption in Watts, in which case you'll need to convert the watts to amps using the following formula:
Amps = Watts/Volts
Once you've determined the current draw in Amps, OVER-rate the breaker by 20%. For example, if you calculate that the oven draws exactly 20 amps, over-rate that to 24 amps, then use the next larger size breaker and wire that is appropriate to the breaker; typically that would mean a 10 AWG wire and 30 Amp breaker.
BUT!!! If you have any questions, contact a licensed electrical professional.
How do you install multiple GFCI receptacles?
A GFCI receptacle can extend its protection to regular receptacles connected to the output side of the GFCI. Each actual GFCI receptacle should be directly connected to a breaker in electric panel.
100 amp subpanel from 200amp service what size wire do you use?
A #4 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 85 amps.
What gauge wire is needed for 200 feet with 110 volts and 50 amps?
6 AWG will handle 50 amps with a voltage drop of about 4 volts. If you go to 4 AWG and limit to 50 amps your voltage drop will be 2.5 volts.
Where was the led light bulb invented?
Nick Holonyak, Jr. invented Led light in 1962, at a General Electric Company laboratory in Syracuse, New York.
What size of wire you need to install a cook top?
The sizing of wire is dependant on what the amperage or wattage of the range is. Most new homes are pre-wired for a standard size range. The wiring is #8 with a insulation factor of 90 degree C and rated for 40 amps. This feeder is protected by a 40 amp breaker.
If the amperage or wattage is larger than this, then a larger conductor must be installed. Use this equation if you need to change wattage into amperage. I = W/E, Amps = Watts/Volts. If the range is in kilowatts multiply the kilowatt number by 1000 to change it to watts to use in the equation.
How do you use 120V equipment on 240V?
The short answer is: you can't. The long answer is: just like using a flashlight bulb that has a voltage that is half the voltage of the battery, it will not work. It will take too much current, causing it to burn out and be useless.
The higher voltage it transformed to a lower voltage by the use of a step down transformer.
What size aluminum wire for 1200 amp service?
For Service Entrance Cable 600 kcmill (Thousands of circular mils).
What size romex for 60 amps of service?
A 300 MCM copper conductor with an insulation rating of 90 degrees C is rated at 320 amps. Parallel the feeders to obtain a total of 640 amps. This will be acceptable as service feeders for a 600 amp service.
A 400 MCM aluminium conductor with an insulation rating of 90 degrees C is rated at 305 amps. Parallel the feeders to obtain a total of 610 amps. This will be acceptable as service feeders for a 600 amp service.
Can you run two 2 pole single phase circuits in the same conduit?
Yes, this only adds up to four wires. The wire sizing is dependant on the amperage of the two single phase loads. Remember to calculate the conduit fill of the four wires to make sure that you have the correct size conduit for the installation.
The size of the wire is stated by its gauge under American Wire Gauge. Six gauge wire is size 6 AWG.
How many watts can run through 12-3 wire?
Wire is rated in ampacity, You can use only 80% of the rated ampacity. Voltage and amperage are inversely proportional. So at 120 volts alternating current you safely run 1800 watts ( I have added a small safety margin). At 240 volts you can run 3600 watts.
I hope this has answered you question
Ampsxvolts=watts watts/volts=amps
What gauge wire will transfer 220 volts 250' and serve 15 amps?
A 300 MCM copper conductor will limit the voltage drop to 3% or less when supplying 125 amps for 500 feet on a 250 volt system.
On a situation like this two transformers might be considered. One to boost the voltage to a higher level. This allows a smaller and less expensive conductor to be used between the two transformers and then drop the voltage down at the load end to feed the load at the recommended value.
Price out the cost of the 300MCM conductor and then compare that against the cost of the two transformers and the new smaller wire size. By boosting the voltage to 600 volts between the transformers the wire can be reduced to a 1/0 copper conductor. This will limit the voltage drop to 3% or less when supplying 125 amps for 500 feet on a 600 volt system.
How many amps can a 9000 watt generator produce?
If your generator is rated at 1000 watts continuous......and you are using 120V.....available amps are 1000/120 =8.3 .
What size wire is required for 325 amp service?
A 350 MCM copper conductor with an insulation rating of 90 degree C is rated at 350 amps.
How do you ground a 120 volt outlet with only one white and one black wire?
The neutral is the ground
The neutral is NOT the ground. The ground is defined by a third bare or green wire in some cases. Look in the back of the receptacles junction box. See if the ground wire is bonded to the box but was not long enough to bring it out to the receptacle. With a tester you can check to see if the box is grounded. Place the testers red probe on to the black wire and the black probe on to the electrical box if it is a metallic box. If a voltage is noted, then the box is grounded. When the receptacle is reinstalled the ground will be picked up through the mounting screws. Or you can extend the ground wire at the back of the box and connect it to the green ground screw on the receptacle.
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What size wire for a 30 amp circuit for a welder?
A #10 copper conductor with an insulation factor of 75 or 90 degrees C are both rated at 30 amps.
How many outlets are allowed on a 240 v branch circuit?
Branch circuit loading
In Canada the CEC states that there shall be not more than 12 outlets on any 2-wire branch circuit. These outlets shall be considered to be rated at not less than 1 amp per outlet
Where the connected load is known, the number of outlets shall be permitted to exceed 12, provided that the load current does not exceed 80% of the rating of the over current device protecting the circuit.
For example on a 15 amp breaker, 15 x 80% = 12 amps, hence the standard of 12 outlets on any 2-wire branch circuit.
On a 20 amp breaker, 20 x 80% = 16 amps. So from a 20 amp breaker this allows 16 outlets on a 2-wire branch circuit as long as the outlets are not considered to be rated at less than 1 amp per outlet.
The definition of an outlet is a point in the wiring installation at which current is taken to supply utilization equipment. What this means is that if a light switch and a fixture outlet were on the same 2-wire branch circuit they would be subtracted from the maximum count of 12 receptacle outlets on the circuit which would leave 10. If the light fixture draws 3 amps plus the switch outlet, then the total circuit outlet count would be reduced to 8 receptacle outlets (12 -- 3 -- 1 = 8).
On a standard specification home most electricians will wire one circuit per room, the outlet count usually never reaches the maximum of 12 outlets.
How much does it cost to replace a utility pole?
It depends on the location but if it is done by the power company usually around $ 5,000.00 - 10,000 because you are paying for 1 guy to install it and 4 to watch. Seriously around $ 3,000.00 -5,000.00 would be a good guess all depending on the area you live in and from what distance the pole comes from.
Maximum amps 6 gage copper wire?
A #6 copper conductor with an insulation factor of 75 or 90 degrees C both have an amp rating of 65 amps. If the #6 conductor is connected to a breaker having a 90 degree C rating then the conductor can carry an amperage of 75 amps
