Training Standard/5357 Implement a Temporary Power Supply

Official standard. This page transcribes or closely follows an official Skilled Trades Ontario, Electrical Safety Authority, or IATSE document. It is provided for reference and convenience only — it is not the authoritative record. Always confirm current requirements against the original source or Skilled Trades Ontario.

Skill Set 5357.0 from the Training Standard.

General Performance Objective

Implement a temporary power supply by verifying readiness of generator set for operation, establishing a ground for a generator set or temporary power supply system, proving a ground for a generator set or temporary power supply system, adjusting electrical output of generator sets, verifying readiness of house power for operation, establishing power to main and sub-distribution systems, verifying power to main and sub-distribution systems, balancing electrical loads connected to house power, and disconnecting power to main and sub-distribution systems, according to regulatory requirements, job requirements, manufacturers' recommendations and specifications, site conditions, company policies and procedures, and safety requirements.

Skills

5357.01 Verify readiness of generator set for operation

Assessing the condition of generator sets, including alternators, generators, transformers, isolating switches, overcurrent protection devices, cables, connectors, strain reliefs, vibration mounts, belts, mechanical connections, batteries, lines, hoses, air intake and exhaust systems, acoustic materials, lubricants, fuel, and fluids.

5357.02 Establish a ground for a generator set or temporary power supply system

Connecting the generator set or temporary power supply system bonded neutral to a ground electrode, providing a low-impedance path to earth, using cables, rods, clamps, and plates or suitable ground points.

5357.03 Prove a ground for a generator set or temporary power supply system

Checking for conductivity to earth and low impedance between the main ground electrode and a separate non-wired reference ground point, ensuring a ground continuity path through the earth and back to the source, using ground proving devices.

5357.04 Adjust electrical output of generator sets

Checking for approval markings, wear, frequency, pressure, flow, noise, smoke, vibration, fluids, and lubrication; monitoring, testing, and adjusting/regulating voltage, amperage, phasing, and grounding.

5357.05 Verify readiness of house power for operation

Assessing the condition of the source including transformers, isolating switches, overcurrent protection devices, cables, connectors, and strain reliefs.

5357.06 Establish power to main and sub-distribution systems

Including lighting; video, audio, and effects equipment; and other on-site facilities, by laying out and connecting mains and sub-mains feeders and sub-distribution systems, splitters, isolation devices, overcurrent protection devices, dimmers, and distribution and load connection panels; energizing the system from supply to load.

5357.07 Verify power to main and sub-distribution systems

Checking connections, cable sizes, bundling, spacing, routing of cables, supports, strain reliefs, system integrity and continuity, phasing, voltage, and voltage drop.

5357.08 Balance electrical loads connected to house power

Including mains, switches, connection panels, splitters and transformers, by checking for noise, voltage, grounding, phasing, colour temperature, smoke, odour, and vibration; adjusting voltage and balancing loads.

5357.09 Disconnect power to main and sub-distribution systems

Including lighting; video, audio, and effects equipment; and other on-site facilities, by opening circuit breakers or switches to de-energize power, locking and tagging source panels, and disconnecting cables.

Source: Apprenticeship Training Standard, Skill Set 5357.0, pp.40–43