Install Exterior Conduit and Wiring
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What happens here
Determine the exact location on the exterior wall where the EV charger will be mounted. From the interior, carefully drill a pilot hole through the wall. Then, using an appropriate hole saw, create a larger opening through the exterior siding and sheathing, ensuring it's sized for the conduit or a weatherproof junction box. Install an LB conduit body on the exterior at this penetration point. Transition from the interior MC cable to individual THHN/THWN wires if required for conduit installation. Run 3/4-inch PVC (Polyvinyl Chloride) conduit from the LB body along the exterior wall down to the planned location of the EV charger. Secure the conduit to the exterior wall using conduit straps every 3 feet. Apply PVC cement to all conduit connections for a watertight seal.
Goal: Extend the EV charger circuit from inside to the exterior mounting point with weather protection
Tools and materials
- 3/4-inch PVC Conduit — Protecting the electrical wires on the exterior of the house
- Cordless Drill — Drilling pilot holes and mounting hardware
- Hole Saw — Creating the penetration through the exterior wall
- LB Conduit Body — Transitioning the conduit from a horizontal to vertical run and for wire pulling at the wall penetration
- PVC Conduit Straps — Securing the conduit to the exterior wall
- Silicone Sealant — Sealing around the wall penetration to prevent water entry
- THHN/THWN Wire — Individual wires pulled through the conduit if transitioning from MC cable
- Wire Strippers — Stripping insulation from wires for connections
- PVC Cement — Bonding PVC conduit and fittings together for a watertight seal
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