UL 943

UL Standard for Safety Ground-Fault Circuit-Interrupters

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Organization: UL
Publication Date: 17 May 2016
Status: active
Page Count: 111
scope:

This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, the Canadian Electrical Code, Part I, and Electrical Installations (Use), NOM-001-SEDE. These devices are intended for use on alternating current (AC) circuits of 120 V, 208Y/120 V, 120/240 V, 127 V, or 220Y/127 V, 60 Hz circuits.

Note: In Canada, the text "intended for protection of personnel" is excluded.

These requirements do not cover ground-fault circuit-interrupters intended for use in circuits served by a transformer having windings wholly insulated from each other.

This Standard applies to all Class A ground-fault circuit-interrupters. These Class A GFCIs are permitted to be integrated into other devices, in which case, besides complying with this Standard, these devices are to comply with the corresponding applicable Standard for the device in question.

This Standard includes minimum requirements for the function, construction, performance, and markings of ground-fault circuit-interrupters included in the scope.

This Standard is intended to cover only Class A GFCI devices.

This Standard also covers GFCIs of the self contained type that are intended for installation in a counter, such as would be suitable for installation in a kitchen or bathroom counter top.

Document History

UL 943
May 17, 2016
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
May 17, 2016
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
February 1, 2006
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
February 1, 2006
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
February 1, 2006
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
February 1, 2006
UL Standard for Safety Ground-Fault Circuit-Interrupters
This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the...
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
1.1 These requirements cover ground-fault circuit-interrupters intended for use only in alternating-current circuits wherein one of the wires is grounded in accordance with the National Electrical...
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit Interrupters
1.1 These requirements cover ground-fault circuit-interrupters intended for use only in alternating-current circuits wherein one of the wires is grounded in accordance with the National Electrical...
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
These requirements cover ground-fault circuit-interrupters intended for use only in alternating-current circuits wherein one of the wires is grounded in accordance with the National Electrical Code....
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit-Interrupters
A description is not available for this item.
943
August 27, 1993
UL Standard for Safety Ground-Fault Circuit Interrupters
A description is not available for this item.
August 27, 1993
UL Standard for Safety for Ground-Fault Circuit-Interrupters
These requirements cover ground-fault circuit-interrupters intended for use only in alternating-current circuits wherein one of the wires is grounded in accordance with the National Electrical Code....

References

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