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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 size wire for 100amp. 12vdc?
A #3 copper wire with an insulation rating of 75 or 90 degrees C is rated at 100 and 110 amps consecutively.
As for the voltage, wire is usually rated in 300, 600 and 1000 volts. Any three of these insulations factors will handle 12 VDC.
An open circuit results when a hot wire touches ground?
An open circuit occurs when there is a break in the electrical path, cutting off the flow of current. When a hot wire touches ground, it can create a short circuit where current flows directly to ground instead of through the intended circuit, leading to potential danger and damage to the equipment.
Convert 9000 watts at 220 volts into amps?
The formula you are looking for is I = W/E. Amps = Watts/Volts.
What will kill you amps or volts?
Truly, it is Power that kills you. Power is the product of voltage AND current.
Knowing that it takes some significant voltage to drive any current through a person, and that it takes more volts to drive more current through the same load (a person's body), we can roughly judge the effect of the electrical shock based on the current:
Milliamps are dangerous
Less than 1/2 milliamp, no sensation
1/2 to 2 milliamps, threshold of perception
2 to 10 milliamps, muscular contraction
5 to 25 milliamps, painful shock (may not be able to let go)
Over 25 milliamps, could be violent muscular contraction
50 to 100 milliamps, ventricular fibrillation
over 100 paralysis of breathing.
Should you Run a 20amp circuit 150 feet with?
It is not advisable to run a 20 amp circuit 150 feet without understanding the specific electrical load requirements and potential voltage drop over distance. It's important to consult with a licensed electrician to ensure the safe and efficient operation of the circuit over that distance.
Why is there continuity between ground and the hot wire on a light switch?
Continuity between the ground and hot wire on a light switch indicates a wiring fault or short circuit. This could be caused by incorrect wiring, a damaged switch, or faulty installation. It poses a safety risk and should be corrected immediately by a qualified electrician.
yes a gfci receptacle has a built in ct that senses a imbalance in current between line and neautral, when the imbalance is large enough (5ma) the gfci is tripped or opened.
check the electrical code book for proper application of gfci devices(breakers & receptacles)
Using the T568B wiring standard which color of wire occupies pin 1?
Instead of taking time to ask the question, why not just look it up??
...What kind of tool writes that? > "white wire, orange stripe"
What is the watts if a 12 volt battery produces 2.7 amps?
The power output of a 12-volt battery producing 2.7 amps can be calculated using the formula: Power (watts) = Voltage (volts) x Current (amps). So, in this case, the power output would be 12 volts x 2.7 amps = 32.4 watts.
black should be your hot white your neautral and the red should be the interconnect to another smoke alarm so that if one goes off in the upstairs the down stairs one will go off also because they are joined by the red wire(interconnected) check for another smoke detector(the red/black/white)should be fed from it to were you are talking about
What size ground do you need for 4000 amp service?
For a 4000 amp service, a grounding system with at least 2/0 AWG copper or 4/0 AWG aluminum wire is typically required. The exact size of the grounding system will depend on factors such as the type of soil, moisture levels, and fault current calculations. It is recommended to consult with a licensed electrician or engineer to determine the specific size needed for your installation.
What happens if an outlet is not grounded?
If an outlet is not grounded, it means that there is no path for excess electrical current to safely dissipate. This can increase the risk of electric shock or fire in the event of a short circuit or power surge. It may also cause interference with electronic devices connected to the outlet.
To convert amps to watts, you also need the voltage. The formula to calculate power in watts is Watts = Amps x Volts. If the voltage is 120V, then 37.5A would be equivalent to 4500W (37.5A x 120V = 4500W).
Can a tv cable outlet and an electrical outlet be wired in the same box?
Yes, you can run two insulated wires through one hole in an outlet box. If it is a plastic box, you can enlarge the hole with a utility knife if you need to. What you don't want is for sharp edges to scrape into or cut the insulation. If it is that tight, you'll want to cut or drill another hole.
How do you make a 240 volt or 30 amps extension cord with two receptacles?
== == See the View Discussion page by clicking the button shown below this answer. Asking this type of question usually means you aren't ready to do this yourself. If you get any detailed "how to do it" answer here, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or their life. <><><> (LIFE SAFETY WARNING! [disclaimer]
Electricity is dangerous!
You can be injured or killed!
Improper installations can cause fire, injury and death!
Should you be doing this yourself?)
This is one of those questions - if you know this little, you shouldn't be doing what you are planning...
No disrespect intended, but this is SO basic that it suggests you have not studied the subject at all!
THE ANSWERS GIVEN BELOW IGNORE THE MOST VITAL QUESTION THAT MUST BE ADDRESSED:
WHAT ABOUT THE CIRCUIT BREAKERS ON THE MAIN PANEL?
WILL THE EXISTING CIRCUIT BREAKERS PROTECTING THE 240 Volt CIRCUIT BE ABLE TO PROTECT THE NEW 120 Volt OUTLETS?
THAT is why you should not attempt to do this work unless you really know what you are doing.
Better for your own safety - and your family's safety - to give this job to a licensed electrician.
=== === <><><> You need a 4 prong (120/240V) plug to do this. Simply connect the neutral to the neutral bus, the ground to the ground bus, and the two hots to the hot bus bars. Do not tie ground to neutral as you don't have a dedicated ground. Fit your breakers into the panel normally. === === <><><> A 240 outlet doesn't have a neutral which is necessary for this to be done. === === <><><> True, a 220V only outlet does not have the necessary neutral. However, many 220V outlets are 110/220V outlets, such as for dryers or ovens. If it has 4 prongs it will work. If it has 3 it will not, as you need both hots, the neutral, and the ground. == == : IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS. : If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
How many volts amps required a 12 volt audio radio?
To determine the amperage required by a 12-volt audio radio, you would need to know the power consumption of the radio in watts. You can then use the formula: Amps = Watts / Volts to calculate the amperage.
Where do the white and black wires go on a 3 prong 120 volt twist lock outlet go?
The white wire goes to the silver screw terminal (neutral), the black wire goes to the brass screw terminal (hot), and the green or bare wire goes to the green screw terminal or grounding clip (ground). Make sure to follow the manufacturer's instructions and adhere to electrical safety practices when installing the outlet.
In 3 horsepower how many amps needed?
3 amps on 120 volts is almost 1/2 hp. To be exact 0.48 hp, that's why I said almost 0.5 hp or 1/2 hp.
So say you are thinking of buying a 3 amp grinder or table top sander and you want to know about how many HP (Horse Power) it is, the answer is 120 volts X 3 amps = 360 X 0.00134 = 0.4824 HP which is almost a 1/2 HP
you can do the math from there if its a 6 amp motor then its almost a 1 HP motor or to be exact 0.4824 X 2 = 0.9648 also almost 1 HP. This is if you are on 120 volts. If you are on 110 or 125 volts its about the same.
Why do we have a neutral wire along with live wire in ac wiring connection?
The live wire, also known as the hot wire, is one of two conductors required to make a circuit. The other conductor is either another hot wire for 240, opposite in phase, or it is a grounded wire for 120, also known as the neutral wire. This is the normal 120/240 split phase system used for residences in North America.
Is it ok to use a 120v light switch in place of a 125v light switch?
It is generally not recommended to use a 120v light switch in place of a 125v switch. The voltage rating of the switch should match the voltage of the circuit to prevent potential safety hazards such as overheating or electrical arcing. It's best to use a switch that matches the voltage of the circuit.
Can a lightning strike cause gfci to trip?
Yes, and it can cause all sorts of strange problems in your house. We got hit by lighting and somehow it only affected one outlet in the whole house where TV was connected. A ball of bright light came from the outlet and traveled across the living room.
For 200 amps service do you use 100 amps per 120 volt leg?
In a 200 amp service, each leg carries 100 amps. However, since the legs are 180 degrees out of phase, you can achieve 240 volts across both legs. So, a 200 amp service typically consists of two 120 volt legs, each providing up to 100 amps.
If the wire dia is 4mm then what is the gauge?
A wire with a diameter of 4mm corresponds to a wire gauge of approximately 6 AWG (American Wire Gauge). The relationship between wire diameter and gauge is not linear, so different wire diameters can correspond to the same gauge.
Mixing different gauge wires in the same circuit is not recommended as it can lead to electrical hazards. It is better to use the same gauge wire throughout the circuit to maintain consistency in the electrical load. If you're adding new lights and outlets, it's best to use the same gauge wire as the existing one.
How many amps are in 2000 watts?
To calculate the amperage, you would need to know the voltage of the system. If you assume a standard voltage of 120V, you can calculate the amperage by dividing the wattage by the voltage: 2000 watts / 120 volts = 16.67 amps.
