Step-by-Step Guide: How to Install Wall Pack Lights WPC Series with Photocell

Wall pack lights are a popular choice for illuminating building exteriors, parking lots, and walkways. The WPC Series offers durable, energy-efficient LED lighting with an integrated twist-lock photocell, making it ideal for dusk-to-dawn operation. Whether you're a DIY enthusiast or a professional electrician, installing a wall pack light with a photocell can enhance security and reduce energy costs.

In this guide, we'll walk you through the entire installation process for the WPC Series wall pack lights. You'll learn about necessary tools, wiring steps, mounting tips, and how to test the photocell for proper operation. By the end, you'll have a fully functional outdoor light that automatically turns on at dusk and off at dawn.

Tools and Materials You'll Need

Before starting, gather the following tools: a voltage tester, wire strippers, screwdrivers (flathead and Phillips), a drill with masonry bits (if mounting on concrete), a ladder, and waterproof wire connectors. You'll also need the WPC Series wall pack light, a compatible twist-lock photocell (such as the Twist-lock Photocell, XALH Series Parking Lot Light), and a junction box if not pre-installed.

Safety first: always turn off power at the circuit breaker before handling any electrical wiring. Use a voltage tester to confirm the circuit is dead. Wear insulated gloves and safety glasses. If you're unsure about any step, consult a licensed electrician.

• Voltage tester and wire strippers
• Waterproof wire connectors (e.g., wire nuts with silicone sealant)
• Drill with masonry bit for concrete walls
• Ladder rated for your height and weight

Understanding the WPC Series Wall Pack Light

The WPC Series wall pack light is designed for easy installation and long-lasting performance. It features a rugged aluminum housing, a polycarbonate lens, and an integrated photocell receptacle. The photocell automatically controls the light based on ambient light levels, so you don't need a separate timer or switch.

Most WPC models come with a pre-wired pigtail for line (black), neutral (white), and ground (green). The photocell receptacle is typically located on the top or side of the fixture. For models without a pre-installed photocell, you can add a compatible Twist-lock Photocell, XALH Series Parking Lot Light by screwing it into the receptacle.

• Check the fixture label for voltage and wattage ratings (typically 120-277V AC).
• Inspect the photocell receptacle for any debris or damage before installation.

Step 1: Mount the Wall Pack Light

Choose a mounting location that provides the desired light coverage. Mark the mounting holes on the wall using the fixture's backplate as a template. Drill pilot holes and insert wall anchors if needed (for brick or concrete). Secure the backplate with screws, ensuring it is level and tight.

Attach the wall pack light to the backplate. Most WPC Series fixtures use a hinged design that allows you to swing the light open for wiring. If your model has a separate mounting bracket, fasten it first, then hang the fixture. Tighten all screws firmly but avoid overtightening to prevent damage.

• Use a level to ensure the light is horizontal for even light distribution.
• For wood siding, use corrosion-resistant screws.

Step 2: Wire the Fixture and Photocell

Run the supply cable from the junction box to the wall pack light. Strip about 3/4 inch of insulation from each wire. Connect the black (line) wire from the supply to the black wire from the fixture. Connect the white (neutral) wire to the white wire. Connect the green or bare ground wire to the ground screw or wire. Use waterproof wire connectors and wrap with electrical tape for extra protection.

If you are using a separate twist-lock photocell, insert it into the receptacle on the fixture and twist clockwise until it locks. The photocell will automatically control the light based on ambient light. For models with a built-in photocell, skip this step. Ensure all connections are secure and no bare wire is exposed.

• Double-check the wiring diagram provided with your WPC Series light.
• Use a wire nut that matches the wire gauge (typically 14-18 AWG).

Step 3: Test the Photocell and Light

Restore power at the circuit breaker. During daylight, the photocell should keep the light off. Cover the photocell sensor with your hand or a dark cloth to simulate darkness. The light should turn on within a few seconds. Remove the cover, and the light should turn off after a short delay.

If the light does not respond, check the wiring connections and ensure the photocell is fully seated. If using a Twist-lock Photocell, XALH Series Parking Lot Light, confirm it is compatible with your fixture. Some photocells have a sensitivity adjustment screw—turn it slightly if needed.

• Test the light at night for final verification.
• If the light flickers, check for loose connections or an incompatible photocell.

Step 4: Secure and Seal the Installation

Once the light is working correctly, close the fixture's front cover or lens and secure it with the provided screws. Apply silicone sealant around the mounting base and any entry points for wires to prevent moisture ingress. This is especially important for outdoor installations exposed to rain or snow.

For added protection, consider applying a weatherproof gasket between the fixture and the wall. If your installation includes a Hyperlite LED High Bay Light - Black Hero Series for nearby indoor areas, ensure the outdoor wall pack is on a separate circuit for easy troubleshooting.

• Use outdoor-rated silicone sealant (clear or white).
• Inspect the installation annually for signs of wear or corrosion.

Troubleshooting Common Issues

If the light stays on all day, the photocell may be in a shaded area or the sensor is dirty. Clean the sensor lens with a soft cloth. If the light does not turn on at night, check the circuit breaker and wiring. A faulty photocell can be replaced easily by unscrewing and installing a new one.

For lights that flicker or hum, verify that the fixture is rated for the supply voltage and that the photocell is matched to the load. Some LED wall packs require a compatible photocell designed for LED loads to avoid flickering.

• Replace the photocell with a Twist-lock Photocell, XALH Series Parking Lot Light if the original fails.
• Contact customer support for warranty issues or advanced troubleshooting.

Installing a WPC Series wall pack light with a photocell is a straightforward project that enhances both safety and energy efficiency. By following these steps, you can enjoy reliable dusk-to-dawn lighting for years. For a complete outdoor lighting setup, explore the Hyperlite LED High Bay Light - Black Hero Series for your garage or workspace, and pair it with the Twist-lock Photocell, XALH Series Parking Lot Light for seamless automation. Visit Hyperlite LED today to find the perfect lighting solutions for your home or business.