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How do you ground a 100 amp breaker box that only has two hot wires coming to it?
Wiki User
∙ 13y ago
Sounds very strange and that the electric code isn't being met. If it is main box a ground rod can be driven into earth and a wire grounded between box and ground rod. However, you should have an electrician investigate what is going on since this box is a safety hazard.
Wiki User
∙ 13y ago
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Can you install two ground wires in the same raceway?
There should be no reason to install two ground wires in the same conduit. Code requires that only a single path should be required if it is to carry a fault current. This ground wire should be single and continuous from the device back to the distribution panel. It is the fault current that is carried on the ground wire that trips the breaker or fault protection device. Don't confuse grounding wires with bonding wires.
Where do I ground if there is No ground coming out of the box?
The question doesn't say what "the box" refers-to: is it a wall box for a socket outlet or is it for a switch - or is it actually the main circuit breaker panel for the building or apartment?You can add a safety ground wire to any wall box - to connect appliances back to the ground on main breaker panel - only if there is a main grounding wire installed at your main breaker panel.You can't add a safety ground wire to any wall box, to connect appliances back to the main breaker panel, if you don't already have a ground wire installed at your main breaker panel. If that is the case, your wiring must be at least 50 years old. It is time to consult with an electrician...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 JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
Why is it good to a ground on a receptacle?
Not only is it good to put a ground on a receptacle it is mandatory by the electrical code rules. The ground is installed to provide a low impedance return to the distribution panel to trip the breaker supplying the circuit in case of a ground fault occurring on the circuit.
What do you use a clamp meter for?
The clamp part is for measuring amps via induction. You set meter to amps and clamp around only a single wire. Device you are measuring must be operating. This means you couldn't clamp around a lamp cord to a table lamp since the current induced in each direction cancels out. You would have to separate the wires. An electrician would carry a short extension cord with the wires already separated. Most often a clamp meter is use to checks amps in a breaker panel on the black wire coming from the breaker.
Can you only use white and black wires on a 2 pole breaker?
Typically the black wire is "hot", and the white wire is neutral. A 2 pole breaker is most commonly used for 240 V, and as such, you would typically use a 3 conductor wire, with black, red and white (+ ground). In a typical application, the black and red are used in the 2 pole breaker, and neutral is connected to the neutral bar in the breaker panel.
How do I wire a 220v ballast when it has only 1 wire labeled 220 when I have 2 wires coming off of my double leg breaker?
Your ballast should show two wires for supply side of ballast. Make sure that neither side of this is grounded to the light and connect the 220 V from your breaker to these two wires and then connect a ground to the chassis of the light from the panel.
Is it safe to have two black wires two white wires and two ground wires on a single breaker?
Hopefully just the black wires are on the breaker. Two circuits on one breaker. Shouldn't be a problem. It would depend on how many outlets or lights were on the breaker in total. Even then, there is very little chance of something drawing current from every outlet at the same time. The only thing is you can't put two wires under one breaker (by code). You would have to wire nut them with a pig-tail then just put the one wire under the breaker.
How do you ground in a plastic box?
The only way to ground your system if you're using plastic boxes is to continue the chain by connecting your ground wires together--just as you would with the hot and nuetral wires--through the entire circuit all the way back to the whole house gound in the circuit breaker panel.
Can you install two ground wires in the same raceway?
There should be no reason to install two ground wires in the same conduit. Code requires that only a single path should be required if it is to carry a fault current. This ground wire should be single and continuous from the device back to the distribution panel. It is the fault current that is carried on the ground wire that trips the breaker or fault protection device. Don't confuse grounding wires with bonding wires.
How many wires can be connected on to a 20 amp breaker in NH?
Code only allows one wire to be connected to a single pole breaker. Any additional circuitry has to be done in a junction box downstream from the breaker.
Christmas light are causing the 15amp circuit breaker to trip and Circuit Panel is full Can I upgrade to a twin circuit breaker without installing a subpanel?
Your only hope is that someone wired the box not to code and that there are two wires going into the offending breaker. If you can't separate wires you can't distribute the load.
How can you wire a normal 120V outlet out of a double pole circuit breaker?
well, the easy answer is, black wire to one pole of the breaker, white wire to the neutral bus with all the other white wires, bare wire to the ground bus with all the other bare (or green) wires. BUT the breaker must be 20 amps or less for residential outlets and you much match the wire size to the breaker, #14 for 15 amp breaker, #12 for a 20 amp breaker AND if there is only going to be one outlet, if it is a 20 amp circuit, the outlet has to be rated for 20 amps. Yes, but why would you want to? It is unclear to anybody else what you are doing and therefore a hazard. Do it right. Use a single pole breaker designed for 110V.
There are only 3 phases that come into house main fuse box so where does ground and neutral come from?
It is very rare to have three-phase electricity coming into a residence. One of the wires is probably the neutral (It will be white or black with white stripes.) The ground comes in from a ground rod near the main, and connects to the ground coming from the meter, AND (If the main fuse box is the first disconnecting means,) the neutral and ground bars have to be bonded together in the box.
How do you connect a 12.2 wire with ground wire for a total of three wires to an appliance that has only two wires?
Terminate the ground bare or green to the junction box case or appliance case if the box is plastic. If the appliance is double insulated it probably does not need the ground wire attached or needs to be updated to current safety standards. The ground is used to carry fault current and trip the breaker or fuse if the wiring or device goes bad. Electricity is dangerous. Always turn the circuit off before working on it.
Where are neutral and ground wires usually bonded together?
Only in the main electric panel.
How do you hook up a sub panel box for 220 and 110?
You bring in the two phases from the main panel plus a neutral wire and a ground wire. you land the two hot wires on the two hot lugs at the top of the panel and the neutral wire to the neutral buss.and the ground wire to the ground buss strip. when you take power from a single breaker and the neutral, its 110. when you pull power from both hots on a 2 pole breaker with no neutral, its 220 If you dont have a set of lugs at the top, you can feed into a two pole breaker mounted in the panel.Make sure your panel has a two phase lug mount. to check to make sure, with the breaker mounted and no power wires connected and all the breakers except your new 2 pole breaker off. use an ohm meter to make sure that there is no conductivity between the two pole breaker terminals. if there is conductivity, thre panel is not suitable to feed with 220, its a 110 panel, with only one phase back board.
How is the rating of the branch-circuit protective device affected when the conductors used are of larger size than called for by the code?
There is no problem using over sized wires on a breaker. It is only when the wires are undersized that the trouble begins. Oversize wire on a breaker is very common practice when overcoming voltage drop on a circuit.
