Transfer Switches

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In a Generac Home Standby Generator installation, control wires play an essential role in allowing proper communication between the generator, transfer switch, and utility power source. The N1/N2, T1, 23/194, and 0/DC Common wires are key control wires that must be properly connected for optimal performance, and regular maintenance checks...

This article is a guide to understanding automatic transfer switch (ATS) compatibility for Generac home standby generators and various electrical setups. It addresses common questions about matching ATS to home electrical systems, generator compatibility (both Generac and non-Generac), and even potential use with solar panel inverters,...

The article explains the difference between service-entrance rated and non-service-entrance rated transfer switches and warns against opening switches without an inner dead front cover. It provides instructions on how to operate a manual transfer switch and emphasizes caution due to potential electrocution or equipment damage....

This article explains the normal power present at a Generac automatic transfer switch (ATS). It clarifies that the ATS has constant 240 VAC supplied by two 120 VAC lines, and that it also draws a small amount of 120 VAC on the T1 circuit for battery charging. Use this information when troubleshooting questions like “ATS has power,” “T1...

This article explains why a home standby generator requires an automatic transfer switch, and what risks can occur if a transfer switch is not used. It also answers whether a generator “comes with” an ATS, including why some systems are bundled and others are not, then points to compatibility and ATS education resources. This helps...

Explains how whips on pre-wired EZ switches can be shortened, lengthened, removed, or replaced while maintaining UL listing and warranty, including maximum extension guidance for the 30-foot whip and NEC considerations for lengthening the 2-foot whip.

This article explains that an automatic transfer switch’s supported voltage and phase are fixed ratings and cannot be changed to match a different site service, such as 120/240 single-phase versus 120/208 three-phase. It helps clarify what customers mean by “changing voltage,” including when they are actually asking about pickup and...

The Generac Load Manager formerly known as Smart Management Module (SMM) is a control wire-free device used to manage large electrical loads and prevent overloading during generator startup. It can manage up to 8 loads and is self-aware, with a built-in circuit board that monitors frequency, and can be used with 4 SACM loads for a total...

Explains the warranty coverage for Generac automatic transfer switches, including what is covered by year and how coverage aligns when an ATS is installed with a generator. Also covers how extended warranties may apply when installed and activated at the same time, and where to find warranty information for manual transfer switches.