Preface

This is the first edition of CSA Z462, Workplace electrical safety.

1 Scope

1.1 Subjects and workplaces included This Standard specifies electrical safety requirements for workplaces that are necessary for the practical safeguarding of workers during activities such as the installation, operation, maintenance, and demolition of electric conductors, electric equipment, signalling and communications conductors and equipment, and raceways for the following:
(a) public and private premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings;
(b) yards, lots, parking lots, carnivals, and industrial substations;
(c) installations of conductors and equipment that connect to the supply of electricity; and
(d) installations used by the electric utility, e.g., office buildings, warehouses, garages, machine shops, and recreational buildings, that are not an integral part of a generating plant, substation, or control centre.


1.2 Workplaces excluded This Standard does not cover the following:
(a) installations in ships, watercraft other than floating buildings, railway rolling stock, aircraft, and automotive vehicles other than mobile homes and recreational vehicles;
(b) installations of railways for the generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signalling and communications;
(c) installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations; and
(d) installations under the exclusive control of an electric utility when such installations
(i) consist of service drops or service laterals, and associated metering;
(ii) are located in legally established easements or rights-of-way designated or recognized by public service commissions, utility commissions, or other regulatory agencies having jurisdiction for such installations; or
(iii) are on property owned or leased by the electric utility for communications or for metering, generation, control, transformation, transmission, or distribution of electric energy.

1.3 Purpose
The purpose of this Standard is to specify requirements for a practical safe working area for workers relative to the hazards arising from the use of electricity.

1.4 Use with related Standards and regulations This Standard is intended for use with Parts I, II, and III of the Canadian Electrical Code and other related Canadian workplace electrical safety Standards (e.g., CAN/CSA-M421 and CAN/CSA-Z460), and should be used with such Standards. In addition, users of this Standard should always refer to provincial/territorial and federal safety regulations that have jurisdiction over their work facility, contract job site, or profession.