UL 1741 PCS compliance may be required by the interconnecting utility or Authority Having Jurisdiction (AHJ), also called the site host. If UL 1741 PCS compliance is required according to applicable site design, follow the guidance in this section.

Compliance with UL 1741 PCS can be achieved for system sizes up to and including 200A with a Backup Switch, Backup Gateway 2, or Gateway 3 according to the requirements below.