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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
The rating or setting of a short-circuit/overcurrent protection device is defined in NEC Article
430.52 Rating or Setting for Individual Motor Circuit. NEC Article 430.55 Combined
Overcurrent Protection permits short-circuit, ground-fault, and overload protection to be
combined into a single protective device.
Combination motor controller short-circuit protection devices (SCPD) and overload protection
devices are respectively designed to open under short-circuit and overload conditions only.
The SCPD must be capable of being manually opened to disconnect the motor it supplies. Fuse
disconnects must be provided with access to remove and replace their ...
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Publisher Resources

ISBN: 9780815520450