DASMA TDS 362 - Residential Garage Door Operator Pre-Wiring for New Construction

Pre-wiring a garage for a door opener during new construction is far easier than fishing wires through finished drywall later. DASMA TDS 362 gives electricians, framers, and door contractors the standard diagram for coordinating rough-in before the drywall crew arrives.

What this data sheet says

DASMA TDS 362 is a pre-wiring reference diagram for residential garage door operators in new construction. It shows where each wire run goes and what wire type to use.

"The pre-wiring diagram establishes the recommended rough-in locations for the operator outlet, wall control button wiring, and photoelectric sensor wiring so that final installation requires no fishing through finished walls."

Key elements from TDS 362:

• 120-volt outlet: the power outlet goes on a dedicated circuit. Mount it in the ceiling near the center of the garage, where the operator head unit will hang. NEC requirements for garage receptacle locations apply.
• Low-voltage wiring for wall button: use two-conductor wire (18 to 22 gauge) from the operator location down the front wall to the entry door area. Mount height follows ANSI/CAN/UL 325 and ADA guidance (see DASMA TDS 384).
• Low-voltage wiring for photoelectric sensors: run two-conductor wire from the operator location down each side jamb to sensor height (4 to 6 inches above the floor, per DASMA TDS 364).
• Keypad wiring: rough in a wire from the operator to the exterior keypad location before siding goes on.

Low-voltage wiring does not require conduit in most jurisdictions. NEC Article 725 requirements for Class 2 wiring apply.

When it applies

TDS 362 is most useful during the framing stage. Once drywall is installed, each wire run requires drilling through framing members and fishing through finished walls. That adds labor cost and can damage surfaces.

In Denver new construction, the local electrical code follows the NEC as adopted by Colorado. Permit plans for new homes show electrical rough-in including the operator outlet. Coordinating between the electrical contractor and the door installer before drywall prevents conflicts.

Garage additions and ADU builds across the Front Range commonly use TDS 362 as a coordination reference. A general contractor can use it to brief the electrician without a specialized door contractor on site during rough-in.

What this means for you

Give this diagram to your electrician before drywall. The operator outlet, wall button wire, and sensor wires are all much easier to install before the walls are closed. A 20-minute conversation during framing saves two hours of fishing wires after drywall.

Do not forget the keypad wire if you want an exterior keypad. This is the most commonly missed run. After siding goes on, adding a keypad wire through an exterior wall is difficult and may not be possible without visible conduit.

Confirm the outlet is on a circuit that meets NEC requirements for garages. A GFCI-protected outlet is required for garage receptacles per NEC Article 210.8.

G Brothers works with builders and general contractors on new construction pre-wiring coordination throughout the Denver metro area and Front Range. We can review rough-in layouts during framing and install the door and operator after drywall.

Full text and source

Download DASMA TDS 362 from the official TDS index at https://www.dasma.com/technical-data-sheets/.

This entry covers pre-wiring for standard residential garage door operators. Jackshaft operators, commercial operators, and gate operators have different wiring requirements and are not covered by TDS 362.