LVS, Inc. 2555 Nicholson Street, San Leandro, CA 94577-4216 Phone: 510-352-9600 1-800-982-4587 Fax: 510-352-6707 www.lvscontrols.com UL1008 Automatic Transfer Switches (ATS) & UL924 Automatic Load Control Relays (ALCR) Why is the EPC-D-F (UL924 Listed) being replaced by the EPC-D-F-ATS (UL1008 Listed)? Still have questions? A no-charge 30 minute webinar is available by con- tacting [email protected] Several years ago, National Electrical Code (NEC), Article 700 requirements surrounding emergency lighting to be switched or dimmed during normal operation, but overrode the UL924 Automatic Load Control Relays (ALCR’s): Emergency lighting controlled by ALCR’s must UL1008 Automatic Transfer Switches (ATS’s): by the normal power source during normal operation, and the emergency power source Emergency Power Normal Power C “SHUNT” ALCR EXAMPLE (such as RRU) Emergency Power Normal Power C ATS EXAMPLE (Such as EPC-D-F) Dimmer Emergency Power Normal Power C “BYPASS” ALCR EXAMPLE (such as EPC-1) C