Last updated September 5, 2026. Specs are from manufacturer catalog and install PDFs checked 31 August 2026. We did not install or lab-test these switches. This is not an install guide and not electrical advice.
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A portable generator plugged into a dryer outlet or a homemade jumper can backfeed the utility. Neighbors and line workers can get hurt. A manual transfer switch is the named piece of equipment that selects which source feeds selected house circuits — utility or generator — without tying the two together.
This page stays on UL 1008 transfer-switch equipment in the Reliance Controls Pro/Tran 2 class: indoor manual switches and kits for a portable generator and a home panel. It is not a panel interlock plate. It is not an automatic standby ATS. It is not a how-to for opening your panel.
What a transfer switch is for
Reliance’s Pro/Tran 2 install PDF describes the product as a two-pole transfer switch. It does not switch the neutral. It is intended for a floating-neutral portable generator. The catalog describes double-throw, break-before-make switch action on each Pro/Tran 2 circuit. Maker language: manual / Loadside™ transfer switch — not an interlock.
In plain terms: each selected circuit can take power from the utility path or the generator path, not both at once.
Robert DeWitt writes about off-grid power gear for Off Grid Power Boom. Based in Arizona, he uses portable power stations, solar panels, and battery systems regularly in extreme heat—focusing on practical runtime, charging speed, reliability, and real-world usability for camping, RV trips, and home backup.
Editorial focus: portable power stations & solar generators, solar panel setups, batteries/inverters, and off-grid preparedness.