Generac — Transferring from Utility Power to Generator Power
Operation · Transfer Switch
From a Generac service manual — check it applies to your exact model before use.
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Before you start
- Never run generator indoors
- Carbon monoxide hazard
- Do not exceed generator wattage rating
- Do not leave unbalanced loads
Procedure
- Move generator outdoors at least 5 feet from openings.
- Connect male plug of power cord to 125/250V receptacle on generator.
- Turn ON circuit breaker for the outlet.
- Plug female connector of power cord to power inlet box.
- Turn all circuit breakers in transfer switch to OFF position.
- Start the generator following generator manual procedures.
- Turn ON the GENERATOR MAIN circuit breaker in transfer switch.
- Turn ON branch circuit breakers one at a time, alternating phase A and B.
- Monitor wattmeters to ensure loads do not exceed generator rating.
- Balance loads between phases A and B within 1000 watts.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Max wattage per model
- Voltage: 125/250V
- Phase balance within 1000W Amazon eBay FridayParts $24.50
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.