How to Install Outdoor Lighting

Install outdoor lighting by planning your layout, running electrical wire through conduit, mounting fixtures securely, and connecting everything to a GFCI-protected circuit.

1. Map Your Lighting Strategy. Walk your property at night to identify dark areas and safety concerns. Mark spots for pathway lights every 6-8 feet, place accent lights to highlight landscape features, and position security lights at entry points and corners. Sketch your plan on paper, noting distances from your electrical panel and existing outlets.
2. Know Your Local Rules. Contact your local building department to understand electrical codes for outdoor installations. Most areas require GFCI protection and specific burial depths for underground wiring. Apply for an electrical permit if required in your area.
3. Pick Voltage, Pick Path. Decide between low-voltage (12V) systems that use a transformer, or line-voltage (120V) systems that connect directly to household current. Low-voltage is safer and easier for DIY installation, while line-voltage provides brighter light but requires more electrical expertise.
4. Assemble Everything First. Purchase your light fixtures, electrical wire rated for direct burial or conduit, wire nuts, a transformer (for low-voltage), and any necessary conduit. You'll need a trenching shovel, wire strippers, voltage tester, and drill with bits for mounting.
5. Connect Your Power Hub. For low-voltage systems, mount the transformer near an existing GFCI outlet, keeping it at least 12 inches above ground. For line-voltage installations, connect to your electrical panel through a new GFCI breaker or extend from an existing GFCI-protected circuit.
6. Mark Before You Dig. Call 811 to mark underground utilities before digging. Dig trenches 6-8 inches deep for low-voltage wire or 18-24 inches deep for line-voltage installations in conduit. Keep trenches straight and avoid sharp bends that could damage wire during installation.
7. Test Before Burying. Lay direct-burial wire or pull wire through underground conduit along your planned route. Leave extra wire at each fixture location for connections. Test all connections with a voltage tester before burying. Cover wire with a few inches of sand or soil, then backfill trenches completely.
8. Mount and Seal Secure. Mount each fixture according to manufacturer instructions, ensuring they're level and securely fastened. Make electrical connections using wire nuts rated for outdoor use, matching wire colors properly. Seal all connections with electrical tape and weatherproof junction boxes.
9. Tune and Celebrate Light. Turn power on and test each fixture individually. Check that all lights illuminate properly and switches work correctly. Adjust fixture angles and beam directions to achieve your desired lighting effects. Install timers or photocells if desired for automatic operation.