NEMA BU 1

Busways

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Organization: NEMA
Publication Date: 1 January 2002
Status: inactive
scope:

This Standard applies to service-entrance, feeder, and branch-circuit busways and associated fittings rated at 600 V or less, 6 000 A or less, and intended for use in accordance with the Canadian Electrical Code, Part 1 (CE Code, Part 1), the National Electrical Code (NEC), ANSI/NFPA 70, and the Mexican Standard for Electrical Installations (Utility), NOM-001-SEDE (See Annex B, Reference Item No. 1). These requirements do not apply to metal enclosed bus intended for connecting switchgear assemblies for use in prefabricated electric distribution systems. 1.1.2

For the purpose of these requirements, a busway is considered to be a grounded metal enclosure containing factory mounted conductors that are usually copper or aluminum bars, rods, or tubes.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.

Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.

Unless otherwise indicated, all voltage and current values mentioned in this Standard are root-mean-square (rms).

Document History

NEMA BU 1
January 1, 2002
Busways
This Standard applies to service-entrance, feeder, and branch-circuit busways and associated fittings rated at 600 V or less, 6 000 A or less, and intended for use in accordance with the Canadian...
January 1, 1999
Busways
This Standards Publication covers products for distribution of electric power at 600 volts or less, consisting of enclosed sectionalized prefabricated busbars rated at 100 amperes or more, and...
January 1, 1994
Busways
A description is not available for this item.
January 1, 1988
Busways
A description is not available for this item.
January 1, 1983
BUSWAYS; REVISION 1 - JANUARY 1986
A description is not available for this item.

References

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