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UL 1053 - UL STANDARD FOR SAFETY GROUND-FAULT SENSING AND RELAYING EQUIPMENT - SEVENTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING NOVEMBER 19, 2015 Organization: UL
Date: 2015-08-05
Description: These requirements do not cover equipment intended to be powered from single-phase circuits operating at more than 600 volts or three-phase circuits operating at more than 600 volts phase-to-phase.  These requirements do not cover ground-fault circuit-interrupters.
UL 1008A OUTLINE - OUTLINE OF INVESTIGATION FOR TRANSFER SWITCH EQUIPMENT, OVER 600 VOLTS - ISSUE 1 Organization: UL
Date: 2006-08-02
Description: These requirements cover transfer switches together with their associated control devices including voltage sensing relays, frequency sensing relays, time delay relays, and the like. An automatic transfer switch as covered by these requirements is a device that automatically transfers a common load from a normal supply to an alternate supply in the event of failure of the normal supply, and automatically returns the load to the normal supply when the normal supply is restored.
CSA C22.2 NO 178.3 - TRANSFER SWITCH EQUIPMENT, OVER 1000 VOLTS - FIRST EDITION Organization: CSA
Date: 2017-01-01
Description: These requirements cover transfer switches together with their associated control devices including, but not limited to, voltage sensing relays, frequency sensing relays, and time delay relays. An automatic transfer switch as covered by these requirements is a device that automatically transfers a common load from a normal supply to an alternate supply in the event of failure of the normal supply, and automatically returns the load to the normal supply when the normal supply is restored.
UL 1008A - UL STANDARD FOR SAFETY TRANSFER SWITCH EQUIPMENT, OVER 1000 VOLTS - SECOND EDITION Organization: UL
Date: 2017-09-05
Description: These requirements cover transfer switches together with their associated control devices including, but not limited to, voltage sensing relays, frequency sensing relays, and time delay relays. An automatic transfer switch as covered by these requirements is a device that automatically transfers a common load from a normal supply to an alternate supply in the event of failure of the normal supply, and automatically returns the load to the normal supply when the normal supply is restored.
NECA NEIS 700 - STANDARD FOR INSTALLING OVERCURRENT PROTECTION TO ACHIEVE SELECTIVE COORDINATION Organization: NECA
Date: 2010-01-01
Description: Products and Applications Included This standard covers the installation of low-voltage overcurrent protective devices, circuit breakers and fuses, rated 600 volts and less, for selective coordination in electrical distribution systems for residential, commercial, and industrial applications.
UL 508A - UL STANDARD FOR SAFETY INDUSTRIAL CONTROL PANELS - SECOND EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING JULY 31, 2017 Organization: UL
Date: 2013-12-20
Description: These requirements cover industrial control panels intended for general industrial use, operating from a voltage of 1000 volts or less. This equipment is intended for installation in ordinary locations, in accordance with the National Electrical Code, ANSI/NFPA 70, where the ambient temperature does not exceed 40°C (104°F) maximum.
UL 1996 - UL STANDARD FOR SAFETY ELECTRIC DUCT HEATERS - FOURTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING JULY 15, 2016 Organization: UL
Date: 2009-08-31
Description: These requirements cover fixed electric duct heaters, and remote control assemblies for such equipment, rated at 600 volts or less to be employed in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.

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