Meter-mounting devices

1.1

This Standard applies to:

-              meter-mounting devices,

-              combination meter-mounting devices with load-side circuit breaker,

-              indoor and outdoor rated, and meter-mounting devices, either as complete self-contained devices or provided as a part of service equipment,

-              Single position and multiple positions,

either as complete self-contained devices or provided as part of service equipment for use in nonhazardous locations, and intended to be employed in accordance with the Rules of the Canadian Electrical Code, Part I (“CEC Part I”).

1.2

This Standard covers devices for housing use with watt hour meters, demand meters, time switches, current transformers, test switches, instruments, and similar devices rated at 320 A or less per meter-mounting devices socket, 600 V or less, single or polyphase, and multiple-position meter socket assemblies with an overall current rating of 600 A or less (200 A maximum per meter socket-mounting device).

1.3

This Standard applies to subfeed meter-mounting devices that have provision for the main load terminations and for one subfeed termination.

1.4

This Standard applies to the meter-mounting device portion when supplied as a part of service or other equipment where applicable.

1.5

Meter-mounting devices, except for combination meter-mounting devices, as covered by this Standard, are not intended to be used as load-making or load-breaking devices.

1.6

This Standard applies to transformer-rated meter-mounting devices that consist of current transformers, meter sockets, and optional test switches, mounted in the same enclosure rated 600 A or less and 600 V (nominal) or less.

1.7

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated either normative (mandatory) or informative (non-mandatory) to define their application