Before You Begin: Please review the guide below. Ensure you have the proper lifting equipment (crane, bucket truck, or scissor lift) commensurate with the weight and elevation of the cabinet. For visual assistance, please refer to our instructional video library.

Phase 1: Unpacking & Preparation

1. Inspect: Carefully uncrate the sign cabinet and inspect for any shipping damage.
2. Remove Faces: Before mounting, you must remove the sign faces to access the mounting points and internal electrical components.
   • Flexible Faces: Loosen tensioning clips and peel back the face material.
   • Rigid Faces (Acrylic/Polycarbonate): Remove the retainer angle (perimeter trim) and slide or lift the plastic faces out.
3. Storage: Store faces and retainers in a safe, clean location away from the work zone to prevent scratching or breakage.

Phase 2: Positioning & Power Entry

1. Template/Pattern: If a mounting pattern was provided, tape it to the wall to mark your mounting holes and electrical penetration point.
2. Marking: If no pattern is used:
   • Measure the back of the cabinet to determine mounting hole locations.
   • Transfer these measurements to the wall, ensuring the layout is level and centered.
3. Power Feed: Mark and drill the pass-through hole for the primary electrical whip.
   • Note: Ensure the power feed enters the back of the cabinet near the internal raceway or disconnect switch location.

Phase 3: Mounting the Cabinet

Identify which mounting method your cabinet requires.

Method A: Internal Mounting (Through-Bolt)

Best for a clean look with no visible external hardware.

1. Lift the cabinet into position.
2. Drill through the back of the aluminum cabinet into the wall structure (studs, blocking, or masonry).
3. Install heavy-duty fasteners (lag bolts, toggle bolts, or masonry anchors) through the back of the cabinet.
   • Tip: Use large fender washers with your bolts to distribute pressure on the aluminum back sheet.
4. Seal all penetration points with silicone to ensure the cabinet remains watertight.

Method B: External Mounting (Angle Brackets/Clips)

Used when internal access is difficult or for specific architectural requirements.

1. Secure the top and bottom mounting brackets (angle iron) to the wall structure first.
2. Lift the cabinet and rest it on the bottom brackets.
3. Bolt the cabinet flanges to the top and bottom brackets using the provided hardware.

Phase 4: Electrical Connection

Most sign cabinets come pre-wired with an internal power supply and a disconnect switch.

1. Route Power: Feed the primary building power (120V or 277V) through the back of the cabinet.
2. Connections: Connect the primary power to the Disconnect Switch inside the cabinet.
   • Hot (Black): Connect to Line side of switch.
   • Neutral (White): Connect to Neutral post.
   • Ground (Green/Bare): Connect to the specific ground lug bonded to the cabinet chassis.
3. Test: Turn on the circuit to verify illumination. Check that all LEDs or lamps are firing correctly before closing the sign.

Phase 5: Final Assembly

1. Clean: Remove any drilling debris or metal shavings from the bottom of the cabinet.
2. Weep Holes: Verify that weep holes (drainage holes) are present on the bottom edge of the cabinet. If they were blocked during manufacturing or installation, drill 1/4″ holes at the lowest points to prevent water accumulation.
3. Re-install Faces: Carefully place the faces back into the frame.
   • Re-attach the retainer formatting/frame securely.
   • Ensure all screws or fasteners are tightened to prevent the face from blowing out in high winds.

Important Safety & Code Compliance:

• Disconnect Switch: A disconnect switch is required by NEC Article 600. If one was not factory-installed, the installer must provide one within sight of the sign.
• Grounding: The metal cabinet must be bonded to the electrical ground system.
• Load Limit: Ensure the branch circuit does not exceed 20 or 30 amperes (depending on local code).

Professional Installation Standards for Long-Lasting Illumination

Installing channel letters is more than just hanging a sign; it is a precise integration of structural engineering and electrical safety. At Innovative Sign Systems, we strictly adhere to NEC Article 600 standards to ensure that every installation is safe, code-compliant, and built to withstand the elements.

This guide is designed for professional installers and outlines the critical phases for a successful mounting and wiring process.

Phase 1: Preparation & Pattern Alignment

Success is determined before the first hole is drilled. Your kit includes a full-scale paper mounting pattern, which serves as the blueprint for the entire project.

1. Surface Inspection: Before applying the pattern, inspect the fascia or wall surface. Ensure it is clean, dry, and free of structural obstructions (like internal studs or pipes) behind the drilling zone.
2. Position the Pattern: Unroll the enclosed paper pattern and tape it securely to the installation surface.
   • Critical Step: Use a 4-foot level to ensure the pattern is perfectly horizontal. Do not rely on the building’s roofline or brick mortar lines, as they are often uneven. Center the pattern based on your site survey measurements.
3. Mark & Drill: Once leveled, drill through the paper pattern at the indicated marks.
   • Mounting Holes: Drill appropriately sized holes for your studs or fasteners.
   • Pass-Through Holes: Drill larger penetrations (typically 3/8″ or 1/2″) for the low-voltage secondary wire whips to pass through the wall.
4. Pattern Removal: Remove the paper and clear away any brick dust or debris from the facade to ensure a flush mount.

Phase 2: Mounting the Letters

Different fabrication methods require specific mounting techniques. Identify your hardware type below:

Method A: Standard Mount (Direct Fastening)

This method is used when the letter can is screwed directly into the fascia.

1. Face Removal: Carefully remove the acrylic faces and trim caps from the channel letters. Set them aside in a safe location to avoid scratching.
2. Feed the Wires: Push the secondary low-voltage whips (the wires coming out of the back of the letter) through the pre-drilled pass-through holes.
3. Secure the Can: Apply a dab of silicone sealant to the back of the drilled holes for weatherproofing. Secure the aluminum letter return (can) to the wall using non-corrosive fasteners appropriate for the substrate (e.g., tapcons for masonry, wood screws for plywood).
4. Re-Install Faces: Once secured, re-attach the acrylic faces.

Method B: Stud Mount (Rivet Nuts & Standoffs)

This method is used for uneven surfaces or when a “halo” or standoff effect is desired.

1. Prep the Studs: Screw the threaded rods (studs) into the rivet nuts located on the back of the aluminum letters.
2. Conduit Management: Push the secondary low-voltage whips through the wall. Note: If required by local code, these wires must be housed in a metal pass-through conduit.
3. Insert & Secure: Slide the threaded rods into the mounting holes. From the backside of the wall (or inside the ceiling), secure the letters using the provided washers and nuts.
   • Pro Tip: Do not overtighten, as this can warp the aluminum backer.

Phase 3: Low Voltage Wiring (Secondary Side)

Proper wiring prevents voltage drop and dimming. We utilize a Parallel Wiring configuration.

1. Group Your Circuits: Refer to the subassembly wiring diagram. Identify which group of letters belongs to which specific 60W power supply circuit.
2. Parallel Connections:
   • Positives: Using a crimping tool and UL-approved wire nuts, connect all Positive leads (Red or White) from the letters in that circuit together.
   • Negatives: Connect all Negative leads (Black) from the letters in that same circuit together.
3. Grounding: Bond all ground wires (Green or Bare Copper) to the building ground system. This is a mandatory safety step.
4. Weatherproofing: If these connections are outside the building envelope (e.g., inside a raceway), use gel-filled waterproof wire nuts to prevent corrosion.

Phase 4: Power Supply Installation

Option A: Damp-Location Rated Transformer (Sloan/Meanwell)

If using a self-contained, damp-rated power supply, no enclosure box is required. Ensure the unit is mounted securely with proper airflow spacing.

Option B: Standard Transformer (Box Required)

1. Mounting: Install the transformer box OPEN SIDE UP to prevent water pooling.
2. Placement Strategy: Mount the power supply as close to the center of the letter set as possible. This minimizes the length of the low-voltage wires, reducing “voltage drop” (which causes dim letters).
3. Routing: Route your bundled Secondary Circuit leads (Positive/Negative) into the box and connect them to the transformer’s DC Output terminals.

Phase 5: Primary Power & Safety Compliance

Warning: All primary connections should be performed by a qualified professional.

1. Primary Hookup: Bring the building’s primary power (120V or 277V) to the transformer’s AC Input side. Ensure the circuit is off at the breaker panel before connecting.
2. Disconnect Switch: You must install a dedicated On/Off toggle switch on the primary “hot” lead.
   • Code Requirement: This switch must be located within “line of sight” of the transformer to allow service technicians to safely cut power during future maintenance.
3. Circuit Limitations: Standard LED channel letter sets should be on a dedicated 20-amp branch circuit. Never exceed 30 amps on a single signage circuit.

Final Check: Flip the switch. Check for consistent illumination across all letters. If one section is dimmer than the rest, check your wire gauge and connection tightness for voltage drop.

Who’s Most Affected?

Primarily, all facilities in California, currently deploying fluorescent lamps will have to transition to more efficient lighting alternatives, such as LEDs, before the phase-outs commencing January 1, 2024.

The Pioneering Purpose Behind the Ban

The decision to ban fluorescent bulbs lies in their environmental and worker safety implications. The harmful chemical Mercury, present in fluorescent bulbs, poses serious health and safety risks. LEDs, offering the same illumination as fluorescents, consume half the electricity, thus reducing energy bills and environmental impact significantly. By 2030, California is estimated to witness an impressive $1 billion in savings, a dramatic reduction in energy consumption, and a considerable decrease in CO2 emissions.

Is This the Start of a Nationwide Trend?

Indeed, California is the second state, following Vermont, to pass such a ban. While at present no other state has an official fluorescent light bulb ban in place, many are anticipated to follow suit, given the current administration’s proposed regulations for 2022.

Partner with Innovative Sign Systems to Navigate the Transition

The inevitable national ban on fluorescent bulbs underlines the need for strategic preparation, particularly for businesses operating in multiple locations. Innovative Sign Systems takes you through the crucial steps – from budgeting and surveying locations, to finding the right vendor, and adhering to a strict transition timeline.

Our professional experience and expertise in brand implementation and facility services, coupled with the support of our dedicated program management teams, facilitate your painless transition to the new law. We manage every aspect – from surveying to installation – ensuring your facilities are compliant while maximizing your energy savings.

With Innovative Sign Systems, you can be confident in your preparation for the California fluorescent ban. Whether you’re preparing for the ban, planning a remodel, or looking to upgrade your signage, we’re here to lend you our expertise.

Ready to elevate your signage? Contact Innovative Sign Systems today for expert design, permitting, and installation services that make your brand stand out. Request a consultation today.

Ready to elevate your signage? Contact Innovative Sign Systems today for expert design, permitting, and installation services that make your brand stand out. Request a consultation today.