CSA C22.2 NO. 344:20

Preface:

This is the first edition of CSA C22.2 No. 344, Grade-level in-ground enclosures. It is one of a series of Standards issued under Part II of the Canadian Electrical Code.

For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of the latest edition of CSA C22.2 No. 0.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope:

1.1
This Standard provides requirements for grade-level, in-ground enclosures. The enclosures are made of polymer concrete, composite, or plastic (enclosure covers may be made of metal), intended for conductors and connections at voltages 750 V or less.

1.2
These enclosures are not intended to be installed where vehicular traffic normally occurs.

1.3
These enclosures are intended to withstand the weight duty classes specified by the manufacturer in accordance with the defined application per Table 1.

1.4
These enclosures are not intended to be waterproof and can be subject to water ingress.

1.5
Enclosures used in electrical applications are to be installed in accordance with the Canadian Electrical Code, Part I.

1.6
This Standard does not cover
a) in-ground boxes for use in hazardous locations as defined in the Canadian Electrical Code, Part I;
b) junction boxes for swimming pools covered by CSA C22.2 No. 89;
c) commercial appliance outlet centres covered by CSA C22.2 No. 244;
d) products covered by CSA C22.2 No. 198.2;
e) boxes covered by CSA C22.2 No. 337 and ULC/ORD-C2996; and
f) enclosures covered by CSA A23.4.

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 normative (mandatory) or informative (non-mandatory) to define their application.

1.8
The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.