C22.2 No. 115-M1989
(Reaffirmed 2000)
Meter-Mounting Devices
Industrial Products
4.11* Wiring Space and Wire-Bending Space
4.11.1
Wiring space and wire-bending space for field-installed conductors shall comply with the requirements of CSA Standard C22.2 No. 0.12, except as specified in Clauses 4.11.7 and 4.11.8 and the additional requirements of Clauses 4.11.2 to 4.11.6.
4.11.2
Wiring space and wire-bending space for field-installed conductors shall be determined on the basis of the following assumptions:
(a) Conductors shall be type RW75. The minimum size shall be No. 12 AWG. The minimum conductor size shall be shown in Table 10 of the CE Code, Part I.
(b) Where a meter socket is marked as suitable for use with copper or aluminum wire, the conductors shall be aluminum.
(c) Where it is intended that a meter socket may be connected by a single conductor or by two or more conductors in parallel, wiring and wire-bending spaces shall be provided for the arrangement requiring the largest space.
4.11.3
Where it is intended that line and load conductors enter and exit the same wall of the meter socket, sufficient wiring space shall be provided for the total number of conductors required to occupy the space between the wall and the termination facilities.
4.11.4
Where a permanently installed barrier is provided to prevent the running of conductors from end-to-end in a meter socket the requirement of Clause 4.11.3 shall apply.
4.11.5
Wiring space in a meter socket may be provided in one or more side gutters.
4.11.6
Where wire connectors are the "lay-in" type or are readily removable the wire-bending space shall comply with the requirements of Table 3 of CSA Standard C22.2 No. 0.12.
4.11.7
Where wire connectors are directed towards the end wall at an angle of 45 ± 3° the wire-bending space shall comply with the requirements of Table 3 of CSA Standard C22.2 No. 0.12.
4.11.8
Where wire connectors are the "lay-in" type or are readily removable and are directed towards the end wall at an angle of 45 ± 3° the wire-bending space shall comply with the requirements of Table 4 of CSA Standard C22.2 No. 0.12.
5.7*
Transformer-rated meter-mounting devices that are not provided with secondary wiring shall be marked to show the wiring method or shall be marked with the following, or equivalent:
THIS DEVICE IS SUPPLIED WITHOUT SECONDARY WIRING. THE METER SOCKET MUST BE WIRED IN ACCORDANCE WITH THE LOCAL UTILITY'S REQUIREMENTS.
and
CE DISPOSITIF EST FOURNI SANS CABLAGE AU SECONDAIRE. RACCORDER L'EMBASE DE COMPTEUR CONFORMÉMENT AUX EXIGENCES DU FOURNISSEUR D'ÉLECTRICITÉ LOCAL.
This marking shall be on the outside of the front cover.
5.8*
Transformer-rated meter-mounting devices intended for field installation of current transformers, busbars, and connectors for supply conductors shall be marked to show
(a) the ampere rating and type of current transformers that may be used;
(b) the method of assembly; and
(c) the secondary wiring method in accordance with Clause 5.7.
Tony Moscioni
Electrical Inspector
Electrical Safety Authority
