NECA - NEIS 407
Installing and Maintaining Panelboards
|Publication Date:||1 January 2009|
Products and Applications
Included This standard describes installation and maintenance procedures for panelboards, and special procedures used after adverse operating conditions such as a short-circuit, ground-fault, or immersion in water.
This standard applies to panelboards rated 600 Volts AC or less, with main disconnects or lugs rated 1600 Amperes or less, and with feeder or branch circuit overcurrent devices rated 1200 Amperes or less.
This publication applies to single panelboards, multisection panelboards, and load centers used for distributing power for commercial, institutional, and industrial loads in nonhazardous locations both indoors and outdoors.
Products and Applications Excluded
This publication does not apply to live-front panelboards, panelboards employing cast enclosures for hazardous or special service conditions, or panelboards designed primarily for residential or light commercial service equipment.
Regulatory and Other Requirements
All information in this publication is intended to conform to the National Electrical Code (ANSI/NFPA Standard 70). Installers should always follow the NEC, applicable state and local codes, and manufacturer's installation instructions when installing and maintaining panelboards. Install panelboards within the limits of all applicable electrical ratings including voltage, amperage, and short-circuit current ratings.
Only qualified persons familiar with the construction and operation of panelboards should perform the installations described in this publication. The term "qualified person" is defined in Article 100 of the NEC. Administrative functions receiving, handling and storing, required in Section 4 and other tasks can be performed under the supervision of a qualified person.
Other National Electrical Installation Standards provide additional guidance for installing particular types of electrical products and systems. A complete list of NEIS is provided in Annex A.