These requirements cover all electric signs@ art forms and outline lighting for use in accordance with the National Electrical Code@ NFPA 70. Electric signs include all signs (regardless of voltage) that are electrically operated and/or electrically illuminated@ including but not limited to the following methods of illumination: incandescent@ fluorescent@ high intensity discharge (HID)@ electric discharge tubing including neon tubing@ light-emitting diode (LED)@ skeleton neon tubing@ cold-cathode lamps@ and electroluminescence. Unless otherwise noted the term ??gn??ncludes signs@ outline lighting@ art forms@ and skeleton neon tubing. Electric signs covered by these requirements also include@ but are not limited to@ awning signs@ trailer-mounted signs@ electrically or mechanically animated signs@ signs supplied by photovoltaic systems and other independent power sources@ changing message signs@ including scrolling@ flipper@ tri-view@ liquid crystal display (LCD)@ and light-emitting diode (LED) type and other electrically operated signs that are not necessarily illuminated. These requirements do not cover the following: a) Illuminated clocks operating at 600 V or less; refer to the Standard for Household Electric Clocks@ UL 826 or for commercial use clocks to the Standard for Time-Indicating and -Recording Appliances@ UL 863; b) Exit signs; refer to the Standard for Emergency Lighting and Power Equipment@ UL 924; c) The trailer of a trailer mounted sign; d) Luminaires mounted to function as outline lighting; refer to the Standard for Luminaires@ UL 1598; e) Luminaires mounted within an Awning Sign; refer to Standard for Luminaires@ UL 1598; f) Signs that do not use electricity; g) Luminaires intended for billboard illumination; refer to Standard for Luminaires@ UL 1598; h) Fiber optics or Fiber optic Illuminators; i) Signs for use in hazardous (classified) locations as defined in the National Electrical Code@ NFPA 70.
UL 48-2011 history
1970UL 48-2022 UL Standard for Safety for Electric Signs
2018UL 48 BULLETIN-2018 UL Standard for Safety Electric Signs (COMMENTS DUE: AUGUST 13@ 2018)
2017UL 48 BULLETIN-2017 UL Standard for Safety Electric Signs (COMMENTS DUE: October 23@ 2017)
2015UL 48 CRD-2015 UL Standard for Safety Electric Signs - Section / Paragraph Reference: 2.65.1@ 4.4.6.1.1@ 4.4.6.1.6@ 7.7.2@ and 8.2.2 Subject: Rough-In Sign Sections (Edition 15: September 02@ 2011)
2014UL 48 BULLETIN-2014 UL Standard for Safety Electric Signs (COMMENTS DUE: SEPTEMBER 8@ 2014)
2013UL 48 CRD-2013 UL Standard for Safety Electric Signs - Section / Paragraph Reference: (New) 4.4.12 Subject: Photovoltaic Electric Signs (Edition 15: September 02@ 2011)
2012UL 48 CRD-2012 UL Standard for Safety Electric Signs - Section / Paragraph Reference: Par 4.1.3.2.3.9 Subject: Use of Screens or Mesh Over Drain Openings in Signs (Edition 15: September 02@ 2011)
2012UL 48 BULLETIN-2012 UL Standard for Safety Electric Signs (COMMENTS DUE: JANUARY 23@ 2013)