Busways

Designation Number:
CSA C22.2 NO. 27
Standard Type:
National Standard of Canada - Domestic
Standard Sub-Type
Tri-National
Standard Development Activity:
New Edition
ICS code(s):
29.060.10
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

1.1.1
This Standard applies to service-entrance, feeder, and branch-circuit busways and associated fittings rated at 600 V 1000 V or less, 6 000 A or less, and intended for use in accordance with the Canadian Electrical Code, Part I (CE Code, Part I), the National Electrical Code (NEC), 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.

1.1.3
Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.

1.1.4
Unless otherwise indicated, all voltage and current values mentioned in this Standard are root-mean-square (rms).

Project need:

To update the current standard due to user experience/feedback/new technology. This proposed New Edition is being developed at the request of CANENA Technical Harmonization Committee – THC 121B – Busways. It will provide the industry with latest requirement in the field of low voltage busways.

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.