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Engineering Bulletins

Engineering bulletins are created to provide technical information addressing a specific issue related to a specific product or group of products, to interpretation of or explanation of policies or procedures, or other information somewhat outside the scope of a Standard.  

Bulletin No. 117, Reinforced Thermosetting Resin Conduit (RTRC) and Fittings Installed on Rooftops, Approved Nov. 2019​

Bulletin No. 116, Tray Cable for use in Residential Applications, Approved Nov. 2019

Bulletin No. 115, Allowable Locations for LFMC and LFNC in NFPA 130, Approved June 2019

Bulletin No. 114, PVC Conduit on Rooftops, Approved June 2018

Bulletin No. 113, Annular Space Protection, Approved June 2018

Bulletin No. 112,Selection and Installation of Type MC-PCS Cable, Approved Oct. 2017

Bulletin No. 111,Magnet Wire Product Identification Numbering, Approved Dec. 2015

Bulletin No. 110,Drain Openings in Boxes and Conduit Bodies Listed for Damp or Wet Locations, Approved Sep. 16, 2015 (Rev.12/15/16)

Bulletin No. 109,Screw Attachments to Electrical Boxes, Approved Feb. 5, 2015

Bulletin No. 108,Application of Flexible Conduit for Structural Joints, Approved Dec. 2014 (Rev. 4/2019)

Bulletin No. 107,  Inclusion of Alternate Metal Types for UL 360.pdfApproved June 2014 (Reaffirmed 11/19)

Bulletin No. 106,Bull_106_Applications for MC Cable and NEMA WC 70_02_24_14.pdfApplications for MC Cable and NEMA WC, Approved February 2014

Bulletin No. 105,Fine-Stranded Cable Connections, Approved April 2012

Bulletin No. 104, Use of Listed Flexible Metal Raceways.pdf​ Approved April 2012 ( Reaffirmed 11/19)

Bulletin No. 103,Photovoltaic Wiring Methods, Approved June 2015

Bulletin No. 102, Revised_04_13_17_Building Wire and Cable NRTLs

Bulletin No. 101,Wiring Options for Protected Premises Fire Alarm Systems based on NFPA 72 Survivability Requirements, Approved April 2011

Bulletin No. 100, Flexible Metal Conduit and Liquidtight Flexible Metal Conduit_NRTLs, Approve April 2017

Bulletin No. 99, ElecCable Type and DimensConsideration, Approved March 2010 (Rev 8/22/19)

Bulletin No. 98,Building Wire and Cable and the LEED Rating System, Approved January 2010

Bulletin No. 97,Steel Conduit and EMT-Proven to Meet the NEC Reg, Approved Mar. 2009 (Rev. 6/2015)

Bulletin No. 96, UL and NEC Req for Corrosion Protectionof Galvanized Steel Conduit and Electrical Metallic Tubing, Approved August 2008 (Rev. 3/18)

Bulletin No. 95,Thermal Effects of Residential-Installed Type NM-B Cable,  Approved (Rev. 8/17).

Bulletin No. 94,Type NM-B Cable Jacket Color Coding for Conductor Size Idenification, Approved October 2006 (Rev. 10/12)

Bulletin No. 93,  Lengths Limitations for FMC and LFMC,​ Approved April 2006 (Reaffirmed 12/11, Rev. 2/14, Reaffirmed 11/19​).

Bulletin No. 92,  Use Type NM-B Cable for Wiring of Residential Lighting Fixtures, ​Approved December 2005 (Rev. 10/12).

Bulletin No. 91,NEMA Termination of Bonding Strip on Type AC Cable, Approved August 2003 (Reaffirmed 12/11).

Bulletin No. 90,Use of Anti-Short Bushings for Terminating Type MC Cable,   Approved Aug 2002 (Reaffirmed 12/11/14).

Bulletin No. 89,NEMA Policy on Adoption of the National Electrical Code, Approved March 1999 (Rev. 11/07).

Bulletin No. 88,Phantom Voltages, Approved October 1998 (Rev. February 2003, Reaffirmed 12/11).

Bulletin No. 84,FCC Regulations Applicable to NEMA Products .pdfFCC Regulations Applicable to NEMA Products, Approved August 2012.

Bulletin No. 71,Knockout Diameters and Fitting Dimensions to Assure Mechanical and Electrical Continuity, Approved April 1999 (Rev. 1979, Reaffirmed 9/04 and 12/11).

Bulletin No. 55,Multiple Knockouts, Approved September 2004 (Rev. 1984, Reaffirmed 1999 and 2011).


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