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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
What happens when two hot wires are connected?
Wiring to the circuit breakers is 220 volts. The circuit breaker box has 2 110 Volt lines. If you connect two black lines together from one side nothing happens. If the these two black wires are from different circuit breakers you may have a safety issue by back feeding the electricity.
If you connect 2 different 110 volt lines you will end up with a short. This ends up as a 220 volt short.
No, THHN is not oil resistant. The Underwriters Laboratories' (UL) "Marking Guide Wire and Cable (January 2010)" shows that THHN is not sunlight, oil, or gasoline resistant; it can not be used in cable trays, direct burial, or for submersible pumps. THHN is a heat-resistant thermoplastic rated for 90 degrees C (140 degrees F), can be used in dry and damp locations.
See related links below for the UL Marking Guide.
What happens when you paint an electrical outlet?
That depends upon how neatly you paint. If you get paint inside the slots, it could interfere with the electrical connection that is supposed to be made when you insert a plug. If you only paint the outside and get no paint inside, then there is no effect on the functioning of the outlet.
ANOTHER OPTION:
Child proof plastic outlet covers can be painted over when painting the actual outlet. When you want to use the outlet, remove the plastic cover. When the outlet plug is not in use, insert the child proof plastic covers. The plastic cover will blend right in with the outlet cover plate. It looks very nice with Hammered Spray Paint!
What size ground wire for a 200 amp service panel to the water meter?
For a 200 amp service panel to the water meter, it is recommended to use a 4 AWG copper wire or 2 AWG aluminum wire as the ground wire. This will provide sufficient grounding capacity for the service panel and meet code requirements. Be sure to check local electrical codes for specific requirements in your area.
What is the mean of RPM in the Ceiling Fan speed?
The mean rotational speed of a ceiling fan is typically measured in revolutions per minute (RPM). The average RPM of a ceiling fan can vary depending on the specific model, but it is commonly around 150-250 RPM for normal operation.
Explain wire size as opposed to gauge size?
Wire size refers to the physical dimensions of a wire, usually expressed in millimeters or inches. Gauge size, on the other hand, is a measurement of the wire's diameter based on a specific gauge system (such as AWG or SWG). So, while wire size refers to the actual physical dimensions, gauge size is a standardized measurement used for electrical wiring.
How many amps does a 100 amp service supply?
A 100 amp service will supply your electrical current needs UP TO 100 amps.
When doing load calculations on a 100 amp panel it can only be loaded up to 80 amps.
How high above ground should wires be installed?
At least 14ft and above. Consider the height of the garbage truck.
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The following refers to supply service conductors. No attachment point shall exceed 30 feet. Across highways, streets, lanes and alleys not less than 18 feet. Across driveways to residential garages not less than 14 feet. Across driveways to commercial and industrial premises not less than 16 feet. And across ground accessible to pedestrians only not less than 11 feet. Primary conductors clearances are; 2.5 to 23 Kv clearance is 20 feet, 34.5 Kv clearance is 22 feet, 46 Kv clearance is 23 feet, and 69 KV clearance is 25 feet.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What size neutral for 60 amp circuit?
For a 60 amp circuit, a 6 gauge wire is typically used as the neutral wire. This wire size ensures proper grounding and safety for the circuit. Make sure to always consult the National Electrical Code (NEC) and local codes for specific requirements in your area.
Do you have to break the ground wire at a pull box and bond it to the box?
No, it is generally not necessary to break the ground wire at a pull box and bond it to the box. The ground wire should instead be continuous and connected securely to ensure proper grounding throughout the electrical system.
How do you reset an electric outlet after electricity went off?
You may have to locate the fuse box or circuit breaker box and reset or replace whats needed. Most outlets dont need to be reset unless they have little buttons on them, meaning it is a GFCI outlet - in which case it will have a little button that says reset on it.
What is the amp rating for a 3 wire?
The amperage rating of any wire or conductor is determined by its size or gauge. It has nothing to do with whether it is a two, three or four conductor wire. For example, in basic residential wiring, a 14 gauge wire is rated at 15 amps, a 12 gauge wire is rated at 20 amps, a # 10 is rated for 30A and so forth.
120 watts and 2.2 amps equal how many horsepower?
To convert electrical power (in watts) to mechanical power (in horsepower), you typically need to take into account the efficiency of the system. However, to provide a rough estimate, you can use the formula: 1 horsepower is approximately equal to 746 watts. Therefore, 120 watts would be roughly 0.16 horsepower. Amps alone cannot be converted to horsepower without knowing the voltage across which the current is flowing.
What size amp circuit breaker should be used for bedroom?
According to code, use a 15 amp breaker if you're using 14 GA wire or a 20 amp breaker if you're using 12 GA wire.
Another question to ask yourself before deciding on the size of the circuit, how many outlets will you be using, and are you anticipating any special electrical needs?
Contact an electrician for assistance with these and any other electrical questions.
If you have an electrical circuit of 15 amps how many amp's are on the neutral?
15 amps out and 15 amps back... unless there is a ground fault, but if that's the case you should shut down the device anyway.
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The answer above applies to the U.S. and Canada for 120 volt load or for a European 240V load.
Note that in North America 240V it is different: For a US or Canada 240 volt load or a balanced three-phase load, there is no current flowing in the neutral.
Can you install a 20 amp exhaust timer on a 15 amp circuit?
It sounds to me like the exhaust timer is just a switch. The 20 amp rating that the timer is given is the maximum amount of current that it can handle and still be within its safety specifications. It will work very well on a 15 amp circuit.
Can you splice a 10 ga wire to a 20 ga wire?
30 gauge wire is much "thinner" than 10 gauge wire. Hence, if you are using 10 gauge for an application requiring only 30 gauge, it will more than handle any current flow. However, if the application requires 10 gauge wire you cannot use 30 gauge wire.
How much power is produced by a circuit by a 9 amp 27 volt circuit?
The power produced by the circuit can be calculated using the formula P = I * V, where P is power, I is current, and V is voltage. In this case, P = 9 amps * 27 volts = 243 watts. So, the circuit would produce 243 watts of power.
What size conduit do you need to install a 0000 wire?
4/0 gauge wire, depending on its insulation type is rated from 230-260 amps. Assuming you are running a new power supply with the 4/0 wire, you will have a minimum or three 4/0 conductors and a ground wire for a single phase power supply and four conductors with ground for a three phase power supply.
Three 4/0 wires require a minimum 2 inch conduit. Four 4/0 wires require a minimum 2 and 1/2 inch conduit. These conduit sizes I'm quoting come directly from the NEC, the National Electric Code. These sizes of conduit are determined by the basic rule that all the conductors in a conduit are not to exceed 40% of the volume of the pipe. The other 60% of air space is required for heat dissipation.
How can you tell if a house has GFCI breakers?
GFCI breakers are required by electrical code for all new and modified residences post 1984.
Ground Fault Circuit Interrupters detect extremely small current fluctuations on the return side Neutral / Ground and cause the circuit to trip. Highly important in moist environments.
To answer the question: GFCI breakers are required in all bathroom, garage and external outlets. To determine if it is a GFCI there will be a switch in the center typically of the outlet that says set/reset. Multiple outlets in a garage or outside may be wired in parallel and controlled by a GFCI breaker located in the main power panel. Remember use of a non-GFCI outlet in a moist environment is courting trouble and you or someone else may be the recipient.
Answer for USA, Canada and countries running a 60 Hz supply service.
GFCI breakers are not required. GFCI protection is required and you may choose whether to install GFCI breakers or GFCI receptacles. GFCI breakers, just like GFCI receptacles, will have a Test button. The breaker also will have the neutral attached to it on an appropriate terminal and an additional wire carrying the neutral current to the neutral bar.
GFCI protection is required in all bathrooms, garages and other unfinished portions of a house including crawl spaces, unfinished basements, outside, and anywhere within 6 ft of the outside edge of a sink. -- Sparkfighter
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Will 7 amps overload a household lighting circuit?
Lighting circuits (UK) are fused at 15A. If in doubt, check the fuse/MCB. Unless the 7A device is lighting, connecting it would be illegal in the UK. Don't forget anything else on the same circuit.
How do you install a rheostat instead of a light switch?
A rheostat is an extremely ancient form of variable resistor that was used very largely to vary voltage. As you mention replacing a light switch, presumably you want to install a dimmer? If so, lighting dimmers are solid state and are a simple replacement for a standard switch. NOTE - you cannot use a conventional dimmer on anything but standard incandescent lamps. They will not work on low volt, fluorescent or halogen lamps (or HID). Make sure that the circuit breaker is turned off before starting work on changing the switch out. Just for the sake of convention the top wire on your conventional switch should be the hot one. Connect this same wire to the top wire that is on your new dimmer switch. Make sure that the dimmer switch is in the off position before turning the breaker back on.
No, amps and watts are not the same. Amps refer to the unit of electric current, while watts refer to the unit of electric power. Watts are calculated by multiplying the voltage by the current in a circuit.
12 amp vacuum that is 120 volts how many watts is that?
To calculate the watts, you can use the formula: Watts = Voltage x Amperage. In this case, it would be 120 volts x 12 amps = 1440 watts. Therefore, the 12-amp vacuum cleaner operating at 120 volts uses 1440 watts of power.
