This is probably all obvious to an electrician. For circuits that operate at higher current s such as audio amplifier s you need to run a seperated wire from the positive terminal of your battery to your device and do not forget to add a fuse near the power source. If the existing cable is installed in conduit or a hollow wall it should be easy to pull a new cable in without damaging the wall. Replace the existing twin and earth cable between the ceiling rose and switch with a 3 core and earth type. Turn off the power to the switch box remove the switch plate and unscrew the switch so you can examine the wires. When switch 1 is turned on both the red or white wire and the black wire are hot. However keep in mind that the switch box might contain other wires or have improper. Some brands will click into place. Here is a diagram of how the switch circuit looks. You can then add the new black wire to the black the white to the white and the ground to the ground wires.
If the box with the existing three way has only three wires in the box then you can not add the new switch without pulling new cables. Replace the one gang switch with a two gang switch. First check to see if the box contains a circuit you can tie into. When switch 2 is on the red wire at switch 1 is hot and when switch 2 is off the white wire at switch 1 is hot. Some brands will click into place. This is probably all obvious to an electrician. Replace the existing twin and earth cable between the ceiling rose and switch with a 3 core and earth type. Here is a diagram of how the switch circuit looks. Press the other end of the circuit breaker into place. This video is about adding a switch to your simple circuit.
Here is a diagram of how the switch circuit looks. Replace the one gang switch with a two gang switch. Turn off the power to the switch box remove the switch plate and unscrew the switch so you can examine the wires. When switch 2 is on the red wire at switch 1 is hot and when switch 2 is off the white wire at switch 1 is hot. Route the black wire that is connected to the breaker switch from the cable clamp to the location where you will install the breaker. Cut in a box made for installation into existing drywall bring power over from the existing swith box and use it for the new switch. Wiring a light switch in the middle of a circuit is necessary if there is more than one receptacle on the circuit but the light in question is not at the end. The switch is at the top of the stairs and there is another switch switch 2 on the circuit at the basement door. In your existing switch box just wirenut your new power feed. Depending on which way yours is wired will determine how you add the new switch or if you can even add the switch.
Here is a diagram of how the switch circuit looks. In your existing switch box just wirenut your new power feed. Replace the existing twin and earth cable between the ceiling rose and switch with a 3 core and earth type. The switch is at the top of the stairs and there is another switch switch 2 on the circuit at the basement door. Depending on which way yours is wired will determine how you add the new switch or if you can even add the switch. Some brands will click into place. Connect a new cable to the switch to provide power to the new light fitting. Coming into switch 1 is a 3 wire cable wired to the switch as shown in the diagram. If the existing cable is installed in conduit or a hollow wall it should be easy to pull a new cable in without damaging the wall. If there s a pair of neutral white wires that aren t connected to the switch you re in luck see photo.
When switch 1 is turned on both the red or white wire and the black wire are hot. Cut in a box made for installation into existing drywall bring power over from the existing swith box and use it for the new switch. Turn off the power to the switch box remove the switch plate and unscrew the switch so you can examine the wires. Route the black wire that is connected to the breaker switch from the cable clamp to the location where you will install the breaker. However keep in mind that the switch box might contain other wires or have improper. First check to see if the box contains a circuit you can tie into. Some brands will click into place. You can then add the new black wire to the black the white to the white and the ground to the ground wires. Press the other end of the circuit breaker into place. I do know that you will be replacing the original single switch with a 3 way switch and adding a 2nd 3 way switch and the wiring to get to and from it.
