How do I install motion-sensor security lighting on my detached garage in Riverview NB?

Installing motion-sensor security lighting on your detached garage in Riverview requires running electrical from your main panel to the garage and mounting weatherproof fixtures designed for New Brunswick's harsh winter conditions. This project involves both electrical work (which requires a licensed electrician in NB) and fixture installation that you can potentially handle yourself.

Electrical Requirements and Code Compliance

Any new electrical circuits to your garage require an electrical permit and inspection by a licensed New Brunswick electrician. You cannot legally run new circuits yourself in NB. The electrician will need to install a dedicated 15-amp or 20-amp circuit from your main panel to the garage, using either underground cable (buried 18-24 inches deep) or overhead service depending on the distance and your property layout. For a typical Riverview residential lot, underground is usually preferred to avoid overhead lines crossing driveways or interfering with tree branches during ice storms.

The circuit will terminate at either a weatherproof outlet box or directly into the motion sensor fixtures. Most installations include at least one GFCI-protected outlet near the garage for maintenance and other outdoor electrical needs. If your garage is more than 100 feet from your house, voltage drop calculations may require larger wire gauge to maintain proper voltage at the fixtures.

Motion Sensor Fixture Selection for Maritime Climate

Choose motion sensor lights rated for Canadian outdoor use with operating temperatures down to at least -30°C. LED fixtures are strongly recommended for Riverview's climate because they start instantly in cold weather, use minimal power, and last 15-25 years compared to 2-3 years for halogen bulbs. Look for fixtures with at least IP65 weather rating to handle driving rain, snow, and ice buildup common in the Riverview area near the Petitcodiac River.

Dual-head LED motion sensors with 2,000-3,000 lumens provide excellent coverage for most detached garages. Single-head fixtures work for smaller garages or supplementary lighting. Adjustable sensitivity and timer settings let you customize the response for your specific site conditions. In Riverview's windy conditions near the Bay of Fundy, set sensitivity carefully to avoid false triggers from moving branches or blowing debris.

Installation Positioning and Coverage

Mount motion sensors 8-12 feet above ground level on the garage wall, positioned to cover your driveway approach and the area around your service door. Corner mounting provides the widest coverage pattern. Avoid mounting directly above overhead garage doors where the door mechanism might interfere with the sensor or where snow sliding off the roof could damage the fixture.

For a typical detached garage, install one motion sensor on the corner facing your driveway approach and a second fixture near the service door. This provides overlapping coverage and eliminates dark spots where someone could approach undetected. In Riverview's suburban setting, position sensors to illuminate your property without shining directly into neighbors' windows.

Mounting and Weatherproofing Details

Use stainless steel or galvanized mounting hardware to prevent rust in the Maritime climate. Seal all mounting holes with exterior-grade caulk to prevent water infiltration behind the siding. If mounting on vinyl siding, use backing blocks to distribute the load and prevent the siding from flexing. For LP SmartSide or HardiePlank siding common on newer Riverview homes, drill pilot holes to prevent cracking.

Install fixtures with a slight downward angle to shed rain and prevent snow accumulation on the sensor lens. Clean the sensor lens monthly during winter to remove salt spray and ice buildup that can reduce sensitivity. Consider installing a small roof overhang or hood above the fixture if your garage lacks adequate eave protection.

DIY vs Professional Installation

You can handle the fixture mounting yourself once the electrical rough-in is complete. This involves mounting the fixture boxes, connecting the fixtures to the electrical supply (following the manufacturer's wiring diagrams), and adjusting the settings. Basic electrical connections at the fixture level don't require a licensed electrician if the circuit and outlet box are already professionally installed.

Hire a licensed electrician for running the new circuit from your main panel to the garage location. This work requires permits, proper wire sizing, GFCI protection, and inspection. Electrical work in NB must be done by licensed professionals, and attempting DIY electrical can void your insurance coverage and create safety hazards.

Need help finding a qualified electrician for your garage lighting project? Find electrical contractors in the Riverview area through the New Brunswick Construction Network directory.