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Electrical Codes, Standards, Recommended Practices and Regulations
book

Electrical Codes, Standards, Recommended Practices and Regulations

by Robert J. Alonzo
January 2010
Intermediate to advanced content levelIntermediate to advanced
512 pages
18h 35m
English
William Andrew
Content preview from Electrical Codes, Standards, Recommended Practices and Regulations
c. Disconnecting all ungrounded load conductors from the source of supply by the operation of
not more than six service disconnecting means. (For lighting and appliance panelboards,
see 2.9.1.)
d. Disconnecting the grounded service conductor when a neutral is provided. [16]
The NEC requirement for panelboard use as service entrance equipment can be found in
Article 408.3(C). NEMA Standards Publication PB 1.1, General Instructions for Proper
Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less provides
guidance for the installation of panelboards.
Transformers
In residential and small commercial applications, distribution
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ISBN: 9780815520450