Covers ground-fault current sensing devices, relaying equipment, or combinations of ground-fault current sensing devices and relaying equipment or equivalent protection equipment for use in ordinary locations that will operate to cause a disconnecting device to open all ungrounded conductors at predetermined values of ground-fault current, in accordance with American National Standard National Electrical Code, ANSI/NFPA 70-1999. The proposal that is being circulated at this time is a clarification and reorganization of requirements in UL 1053.
UL 1053-1999 history
1970UL 1053-2020 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment
2015UL 1053 BULLETIN-2015 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (COMMENTS DUE: November 16@ 2015)
2015UL 1053-2015 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (Seventh Edition; Reprint with revisions through and including November 19, 2015)
2011UL 1053 BULLETIN-2011 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (COMMENTS DUE: April 25@ 2011)
2010UL 1053 BULLETIN-2010 SUMMARY OF TOPICS The following changes in requirements to the Standard for Ground-Fault Sensing and Relaying Equipment, UL 1053, are being proposed for preliminary review and comment only
2009UL 1053 BULLETIN-2009 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (COMMENTS DUE: June 08@ 2009)
2008UL 1053 BULLETIN-2008 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (COMMENTS DUE: November 17@ 2008)
1999UL 1053-1999 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment Sixth Edition
1994UL 1053-1994 UL Standard for Safety Ground-Fault Sensing and Relaying Equipment (Fifth Edition)