Can I get power from a light switch for another light switch?

You can pull power from a switch box—sometimes



Switch boxes can sometimes be used as a power source for a new outlet, but only if the box is large enough and has neutral and ground wires running through it.

What type of wire is used for lights?





The following NEC regulations apply to Romex conductors:

Wire Gauge or Type Rated Amperage Common Uses
14-2 Romex 15 A Lighting Circuits
12-2 Romex 20 A Lighting and Outlet Circuits, refrigerator
10-2 Romex 30 A Electric water heater, baseboard heaters
10-3 Romex 30 A Electric Clothes Dryer

How do you connect two lights to two switches from one power source?

Run 12-gauge electrical cable between each switch and the light it controls. Pull one end of each cable through the back of one of the light fixture electrical boxes. Strip both ends of each cable with a knife, separate the wires and remove 1/2 inch of insulation from the end of each.

How do I wire two switches with one power source?

Quote from the video:
Quote from Youtube video: So one cable supplying these two switches this is already set up for from a different model for a different power source.

Can two switches control one light?

Two separate light switches are able to control a single light through the use of special electrical wiring and a three-way switch. A three-way switch connects the two switches and the light together, creating an uninterrupted, but controllable, circuit amongst all components.

How do I separate multiple lights on one switch?





3 Answers

  1. Get a 2-gang box to replace your existing 1-gang box.
  2. Get a new switch.
  3. Remove your existing box and install the 2-gang box in its place.
  4. Run your supply hot wire to both switches.
  5. Connect the light/fan hot wire to one switch and the exterior light to the other.
  6. Join all neutrals and ground wires.


How many circuits can share a ground?

The code requires each branch circuit to have an equipment ground (either a wire, or conduit, or cable tray as in 250.120A), they can be shared when they are in the same raceway. If all the 20A circuits are in one raceway then you just need one ground.

Can two 240v circuits share a ground?

As long as both circuits are fed from the same panel and that the panel is properly grounded and the required bond wire and bonding screw is installed thru the neutral bus bar is all complete according to code.

Can 2 circuits share a neutral?



What is a multiwire branch circuit? A multiwire branch circuit is a branch circuit with a shared neutral. This means there are two or more ungrounded (hot) phase or system conductors with a voltage between them and a shared neutral.

Can you run a ground wire to an outlet?

Two-prong outlets have no ground wire, without which the risk of electrocution and appliance damage is substantial. Simply adding an outlet with an additional prong will give you added appliance access, but it will not give you the safety that grounding provides.

Can GFCI replace ungrounded outlet?

Just because you replace an underground outlet with a GFIC outlet doesn’t mean it’s grounded. However, you can replace ungrounded outlets with GFCI outlets, and it does make the outlet safer than if you didn’t have one installed.

Can you ground a 2 wire system?



You can retrofit your 2-wire outlets with new 3-wire or GFCI receptacles in the same outlet box without any rewiring. However, the box itself must be grounded.

Can I install a 3 prong outlet without ground?

However, most newer appliances require an outlet that has three prongs for it to be plugged in. This has led many homeowners to incorrectly install a three prong outlet without properly attaching a ground wire. This can lead to many problems including risk of shock and appliances suffering from power surges.

Is there a difference between GFI and GFCI?

Ground fault circuit interrupters (GFCI) and ground fault interrupters (GFI) are the exact same device under slightly different names. Though GFCI is more commonly used than GFI, the terms are interchangeable.

What happens if you don’t ground a 3 prong outlet?

An ungrounded three-prong outlet increases the potential for shocks or electrocution, and prevents surge protectors from doing their job, which may allow for damage to electronic components.