How to Best Use a Parallel Switch

There are many ways to use a parallel switch in connection to installing interior lighting inside a home. A parallel switch allows multiple lights to be connected and controlled using only one switch. Other fixtures can also be connected to the circuit to add variety. In the bathroom, for example, a light fixture can be connected in parallel to an exhaust fan. When the parallel switch is turned on, both the fan and the light are turned on at the same time. A parallel switch is also useful in large halls or rooms that need more than one light fixture for illumination. Instead of turning on several switches, use this switch instead. Here is how to best use a parallel switch.

Step 1 – Determine the Number of Fixtures to be Connected in Parallel

The number of fixtures will affect the number of other materials needed for the installation. If there are ten light fixtures to be connected to one single switch, then there should also be ten junction boxes to be used. Other materials such as wire nuts will also depend on this number. For a wide hall, never allow one switch to be overloaded. Connect a maximum of 10 fixtures to only one switch.

Step 2 – Plan the Installation

Planning is a crucial stage when opting to use a parallel switch. This is important because the installation requires not just one, but several fixtures. Plan where the fixtures will be installed in order to determine the length of wiring cable needed. Plan where to drill holes for the cable as well. The best way to install the cable is to run it first to the ceiling or attic and allow it to run horizontally towards the location of the fixture. Determine what fixtures are to be connected as well. When planning to add a fan or other electrical devices to the switch, make sure that this is the best option. If not, run a series connections independently for that fixture.

Step 3 – Connecting the Fixtures in Parallel

Before working in the connection process, never ever forget to turn off the power by switching off the circuit breaker or removing the fuse in the fuse box. Start stripping the wires of the fixtures and connect all wires of the same color together. Make sure to hide all stripped wires in junction boxes according to local codes. Connect the wires of the fixtures to the wires on the parallel switch. If the switch has not been installed and not yet connected to the power source, make sure to do so. 

After the wiring connections have been done, make sure that all stripped wires are tucked inside the junction boxes. Turn on the power supply and test if the parallel switch turns on all fixtures connected.