The National Electrical Contractors Association (NECA), Bethesda, Md., recently added another publication to its growing series of National Electrical Installation Standards (NEIS). Approved as an American National Standard by ANSI, NECA 407-2002, Recommended Practice for Installing and Maintaining Panelboards, describes the installation procedures for panelboards rated 600VAC or less.

The new standard applies to single panelboards or multi-section panelboards and load centers used for distributing power for commercial, institutional, and industrial loads in non-hazardous locations both indoors and outdoors. It also covers periodic routine maintenance and troubleshooting procedures for panelboards and special procedures used after adverse operating conditions such as a short circuit, ground-fault or immersion in water.

Available for $25 (with NECA-member and quantity discounts), you can purchase the standard by calling 301-215-4504, faxing 301-215-4500, or e-mailing NEIS area also available in PDF format at