Medium Voltage Transfer Switches

Designation Number:
C22.2 No. 178.3
Standard Type:
Consensus SDO Standard
Standard Development Activity:
New Standard
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

  1. These requirements cover automatic, non-automatic and manual transfer switches operating at voltages of 1000 V ac and higher, and intended for use in ordinary locations to provide for power as follows,

a) Automatic transfer switches for use in emergency systems in accordance with Articles 517, Health Care Facilities, 700, Emergency Systems, 701, Legally Required Standby Systems, and 702, Optional Standby Systems of the National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1); and the Health Care Facilities Code, ANSI/NFPA 99 (refer to Annex A, item 12).

b) transfer switches for use in optional standby systems in accordance with Article 702 of the National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1)

Note: Automatic transfer switches for optional standby systems are not recognized in Canada.

c) In legally required standby systems in accordance with Article 701 of the National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1)

Note: Legally-required standby systems are not recognized in Canada.

d) Automatic transfer switches for use in accordance with the Standard for the Installation of Stationary Pumps for Fire Protection, ANSI/NFPA 20 (refer to Annex A, item 2).

e) Non-Automatic transfer switches for use in accordance with Articles 517, Health Care Facilities, and 702, Optional Standby Systems of the National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1); and the Health Care Facilities Code, ANSI/NFPA 99 (refer to Annex A item 12)

f) In Canada, general requirements as indicated in the General Requirements – Canadian Electrical Code, Part II, CSA C22.2 No. 0-10 (refer to Annex A, Item 3), are also applicable

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.