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How to extend a wire if an existing wire is short in the junction box?
Wiki User
∙ 13y ago
The answer depends on what type of access you have to the junction box. The wire external to the box may have some slack that can be brought into the box. If everything is tight you will probably have to install one or more additional junction boxes or rerun wire from electric panel.
As an example assume that the short wire has no external slack, but you can install a new junction box near the other box and in the path of the short wire.
1. Pull the short wire from existing junction box.
2. Install new box in path of short wire so more slack will be available in the additional junction box; and pull wire into new box.
3. Run a wire of the same size from new to old box and re-splice any connections for original short wire or new connections; and connect this new wire to the original short wire in the new box.
Make sure you follow all code requirements for your locale.
Wiki User
∙ 13y ago
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Can you extend an existing wire by just using wire nuts and electrical tape and no junction box?
Yes. But it is unsafe and does not meet code anywhere in the U.S. It is a foolish and dangerous choice to ignore the National Electrical Code and common sense to apply a solution to a problem that may result in death, injury or property loss - and may put others at risk other than the short-sighted person who makes a choice to extend an electrical line without a junction box.
How do you add another porch light to an existing switch?
Piggyback off the box for the existing light. Run a wire from the existing junction box to a new junction box (which is placed wherever you want the new fixture). Then, in the existing box, connect the wire coming from the switch, the wire for the existing fixture, and the wire for the new fixture together using wire nuts. Wire up the new fixture, and presto, you have two fixtures on a switch where there was only one before.
How do you extend romex wire you moved an outlet you need to extend and connect?
You need to splice the extension Romex, using wire nuts, inside a covered junction box made for the purpose. If you can do it within the original outlet box you can put a blank cover on the box. If not you may have to install a new "old work" box in wall. If you can get to wire in attic or basement you could put the junction box in one of those locations. The junction box must be accessible so you can't bury it in the wall.
Can a 240V wire be run from the junction box and not the service box?
Junction box for what? Do you mean a sub panel?
How do I move thermostat from downstairs to upstairs?
There are two types of thermostats. One is line voltage and will require a splice be made in the old thermostat junction box . From the old box a new cable has to be pulled to the new thermostat junction box. This wire must be of the same size as the existing wire.The other type of thermostat is low voltage thermostat. This uses usually # 22 size wire and because it operates on low voltage it does not need a junction box to make a splice in. Solder and tape the new wire on to the old piece and then take it to where the new thermostat is to be located.
Can you extend an existing wire by just using wire nuts and electrical tape and no junction box?
Yes. But it is unsafe and does not meet code anywhere in the U.S. It is a foolish and dangerous choice to ignore the National Electrical Code and common sense to apply a solution to a problem that may result in death, injury or property loss - and may put others at risk other than the short-sighted person who makes a choice to extend an electrical line without a junction box.
How do you add another porch light to an existing switch?
Piggyback off the box for the existing light. Run a wire from the existing junction box to a new junction box (which is placed wherever you want the new fixture). Then, in the existing box, connect the wire coming from the switch, the wire for the existing fixture, and the wire for the new fixture together using wire nuts. Wire up the new fixture, and presto, you have two fixtures on a switch where there was only one before.
Do you need to use TC extension wire to connect a thermocouple or can you use shielded cable?
You must use thermocouple wire (of the same type as the thermocouple) to extend the circuit. If you switch to a different wire the point of connection between the two becomes a thermocouple junction itself, and the resulting voltage from that junction will skew your reading. You can use any wire to extend a thermocouple connection if you know the temperature of the junction where the thermocouple wire ends--this becomes the reference junction.
How do you extend an 240v wire circuit 2 feet longer?
If you do not add a junction box it looks like new wire all the way from the old junction box with new wire that is longer. It's a tough place to be.
Can copper wire be used for thermocouple extention?
No. A thermocouple is made from two dissimilar wires. At the junction of these two wires, an electrical signal is generated that is measured in millivolts. If you insert another type of wire, such as copper, then you have introduced another electrical junction. Your signal will be (millivolt from junction 1 + millivolt from junction 2). <><><> Maybe. A thermocouple measures the temperature difference between the sensing junction (where the two different metal wires meet) and the other end of the wire, the reference junction. If you extend a thermocouple with copper wire, you will measure the temperature difference between the junction and the location where the copper extension is spliced on. If the copper splice is the same temperature as the reference junction, or if you can measure the temperature at the splice, then it will be fine. In general, it is better to run the thermocouple wire to the reference junction.
How do you extend romex wire you moved an outlet you need to extend and connect?
You need to splice the extension Romex, using wire nuts, inside a covered junction box made for the purpose. If you can do it within the original outlet box you can put a blank cover on the box. If not you may have to install a new "old work" box in wall. If you can get to wire in attic or basement you could put the junction box in one of those locations. The junction box must be accessible so you can't bury it in the wall.
Can you mix aluminum wire with romex in a junction box?
No, do not mix aluminum wire with copper wire.
How do you extend the electric outlet at the basement?
Parallel connect the new receptacle to a receptacle in the existing circuit. Black (hot) existing to black (new), white existing to white (new), ground existing to ground (new). Make the ground wire coming into the new receptacle box longer so that it can be looped around the ground screw located in the receptacle box first and then connect to the receptacle without having a break in the wire.
Can a 240V wire be run from the junction box and not the service box?
Junction box for what? Do you mean a sub panel?
How do I move thermostat from downstairs to upstairs?
There are two types of thermostats. One is line voltage and will require a splice be made in the old thermostat junction box . From the old box a new cable has to be pulled to the new thermostat junction box. This wire must be of the same size as the existing wire.The other type of thermostat is low voltage thermostat. This uses usually # 22 size wire and because it operates on low voltage it does not need a junction box to make a splice in. Solder and tape the new wire on to the old piece and then take it to where the new thermostat is to be located.
Can you extend the antena wire?
You can extend an antenna wire, but the added length will reduce amplitude of received signal. You may need an in-line amplifier depending on the application and length of antenna wire.
Can you junction box 8ga wire with 10ga wire?
There is no restriction on different size wires being spliced in the same junction box. If your question involves splicing 8ga. to 10ga, this also is not a problem so long as the circuit allows for 10ga wire.
