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. 120,   Using Torque Tools for Terminating Building Wire, Approved March 2021

Bulletin No. 121,   Dissimilar Metals for Conduit and Tubing per the National Electrical Code, Approved January 2021

Bulletin No. 119,   Identification of Lighting Control Conductor Insulation, Approved April 2020

Bulletin No. 118,    Flexible Conduits for Use in Plenums, Approved August 2020

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. March 2021)

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,Applications 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, Building Wire and Cable Nationally Recognized Testing Laboratories, Approved January 2021

Bulletin No. 101, Wiring Options for Protected Premises Fire Alarm Systems NFPA 72 Survivability Requirements, Approved December 2020

Bulletin No. 100, Flexible Metal Conduit LFM Conduit NRTLs, Approve January 2021

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 of Type NM-B Cable for Wiring of Residential Lighting Fixtures, ​Approved December 2020

Bulletin No. 91,    Termination of Bonding Strip on Type AC Cable, Approved August 2003 (Reaffirmed 12/11, 8/20).

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, Rev 8/20).

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