Wiring Guide for Motorised Blinds:
Shaped-Gable and Rectangular Motorised Blinds Electrical Installation
Section 1: Shaped Gable Blinds (240-Volt AC Intelligent Motors)
Motor Specification: 240-volt intelligent motors.
Wiring Requirement: Each motor should be connected via a flex outlet plate positioned at the base of each slope. Ensure the outlet plate accommodates the blind’s headrail, which measures approximately 80mm in width.
Connection Details: Extend wiring from the flex outlet to a fused switched spur located at a more accessible, lower level. This configuration is crucial for individual blind control and safety. We will install the blind and hook up the blind mains cable to the mains supply provided. Under no circumstances should the blind motor cable be shortened – this cable also acts as an arial for receipt of the wireless control signal.
Safety and Control: Incorporate a 5-amp fuse for each blind within the switched spur to safeguard the motor. The setup must allow for the isolation of each blind motor for maintenance or troubleshooting.
Section 2: Shaped Gable Blinds and Rectangular Free hanging Blinds (Low-Voltage DC Intelligent Motors)
Motor Specification: 12, 18-, or 24-volt DC motors, requiring less complex wiring.
Cable Installation: Run a 0.75mm twin flex cable from the top right-hand corner (interior perspective) of each blind, leaving an excess length (tail) of approximately 500mm. (See Drawing 1). This MUST be 0.75mm FLEX. Do not install grey twin & earth.
Cable Routing: At the blind end, the twin flex should exit the wall at the junction where the window frame meets the interior plastered recess. Route the cable to a designated termination point (e.g., cupboard, attic, wardrobe), ensuring the final cable length does not exceed 25 metres to prevent voltage drop.
Termination Point: Leave around 500mm of cable at the termination point for connection to a transformer, which will be housed appropriately by our team.
Power Supply: Install a standard 13-amp socket or fused switched spur at the termination point to power the transformer box.
Additional Notes:
Note that architect’s drawings represent an external elevation. Consequently, the correct cable exit positions will correspond to the right-hand side of each window when viewed from inside.
Maintain adherence to the maximum cable run length of 25 metres for the 0.75mm twin flex to avoid potential voltage drop issues.
Please ensure all installations comply with the latest electrical safety standards and regulations. Coordination with our team for final setup and operational testing is essential to ensure optimal functionality of the blind systems.
This document is a guidance note. Installations can and do vary. Please consult with the SSC Team to get specific instructions for your installation.
The Scottish Shutter Company – January 2025
