As of October 1, 2025, all meter base plug-in transfer device installations must be approved by the Electrical Safety Authority (ESA) and a connection authorization obtained prior to reconnection. This new requirement also applies to any installer who may be a licensed electrical contractor.
For details, please refer to Standard No. RM7-310-0500: Meter-mounted Plug-in Transfer Switch Device within the “Distribution Standards - Services & Metering” section (under Single Phase) View builders and contractors.