Host David Thiel and electrical expert Doug Snapp explain how to use conduit.
- A conduit is a metal pipe that houses electrical wires. When wires are tightly wound through a conduit, a grounding wire isn't necessary -- as the conduit itself acts as a ground. (It's important to use conduit when you're running wires on the outside of a wall.)
- Conduit benders will bend the metal of a conduit, or you can use a 90 degree pulling 'L' (figure A). It opens in the back to give you an access point to pull wires through. Run the wires from the subpanel (figure B) to the pulling 'L' and then down to the junction box (figure C).
- A junction box is an outlet box (also called a knockout box because of the circles in the sides of the box knocked out and removed in order to install a connector for the conduit). Use a conduit bender (figure D) to shape the conduit so that it will fit into the connector at the necessary angle. The conduit bender is pictured upside down in this example; normally it's operated on the floor.
- Brackets hold the conduit tight against the wall (figure E). Space brackets within 36 inches of a junction box, then every ten feet thereafter. Use a level to make sure your conduit is straight.
GUESTS :
Doug Snapp
Licensed Electrician
Massey Electric
Website: www.masseyelectric.com
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