Powering temporary lights and power in construction area

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# Back to Top (cont.) ## Isolation and lockout 490. (1) High voltage electrical equipment shall, where practicable, be completely isolated, grounded and locked out where required by these regulations before work is started on it. (2) Where it is not practicable to completely isolate high voltage electrical equipment an employer shall conduct a formal hazard assessment and develop an electrical safety program that includes (a) written safe work procedures; (b) the number of qualified persons required to be present while the work is being done; and (c) providing appropriate electrical protective equipment, including rubber blankets, hoses, hoods, gloves and live line tools that shall be selected, used, stored, tested and maintained in accordance with a standard acceptable to the minister. (3) A worker shall not work on an energized electrical conductor or equipment, unless procedures satisfactory to the minister are used and the worker is provided with and trained in the use of special tools, approved for use by an authority acceptable to the minister. 5/12 s490 ## Back to Top ## Warning signs 491. Before completing installation and after energizing high voltage electrical equipment, conspicuous signs visible to a worker shall be placed close to the equipment stating "Danger, Energized Equipment". 5/12 s491 ## Back to Top ## De-energized high voltage systems - isolation and lockout 492. (1) Before working on a high voltage power system that, for reasons of safety, shall be de- energized, the worker in charge shall ensure that the part of the system being worked on is isolated and grounded and locked out where required by these regulations. (2) A barrier or other form of distinctive identification shall be used to differentiate high voltage electrical equipment which has been de-energized for safety reasons from similar energized equipment at the work location where a lack of identification would result in undue risk to workers. (3) Where it is imp…

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# 1910.334 USE OF EQUIPMENT - 1910.334(a) Portable electric equipment. This paragraph applies to the use of cord and plug connected equipment, including flexible cord sets (extension cords). - 1910.334(a)(1) Handling. Portable equipment shall be handled in a manner which will not cause damage. Flexible electric cords connected to equipment may not be used for raising or lowering the equipment. Flexible cords may not be fastened with staples or otherwise hung in such a fashion as could damage the outer jacket or insulation. - 1910.334(a)(2) Visual inspection. - 1910.334(a)(2)(i) Portable cord and plug connected equipment and flexible cord sets (extension cords) shall be visually inspected before use on any shift for external defects (such as loose parts, deformed and missing pins, or damage to outer jacket or insulation) and for evidence of possible internal damage (such as pinched or crushed outer jacket). Cord and plug connected equipment and flexible cord sets (extension cords) which remain connected once they are put in place and are not exposed to damage need not be visually inspected until they are relocated. 1910.334(a)(2)(ii) If there is a defect or evidence of damage that might expose an employee to injury, the defective or damaged item shall be removed from service, and no employee may use it until repairs and tests necessary to render the equipment safe have been made. 1910.334(a)(2)(iii) When an attachment plug is to be connected to a receptacle (including an on a cord set), the relationship of the plug and receptacle contacts shall first be checked to ensure that they are of proper mating configurations. ## 1910.334(a)(3) Grounding type equipment. 1910.334(a)(3)(i) A flexible cord used with grounding type equipment shall contain an equipment grounding conductor. - 1910.334(a)(3)(ii) Attachment plugs and receptacles may not be connected or altered in a manner which would prevent proper continuity of the equipment grounding conductor at the point …

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# PART 36 - ELECTRICITY (cont.) ## 36.26 Temporary wiring (cont.) Occupational Health and Safety Act General Regulations PART 36 - ELECTRICITY Section 36.27 ## 36.27 Portable electrical conductors The employer shall ensure that where portable electric conductors are used, a sufficient number of fixed outlets shall be installed at points where they are safely accessible. (EC180/87) ## 36.28 Rubber covered cord The employer shall ensure that rubber covered cord shall be used for portable electrical tools, extension lamps, etc., which may be subjected to hard usage. Single strand wire shall not be used for temporary wiring. (EC180/87) ## 36.29 Grounding of equipment The employer shall ensure that armouring and sheathing of electric cables, metal conduits and their fittings, metallic safeguards and other non-current carrying metal parts of electrical equipment shall be effectively grounded. (EC180/87) ## 36.30 Grounding conductors The employer shall ensure that grounding conductors shall be of low resistance and of sufficient capacity to safely carry the heaviest flow of current which may result from a breakdown of the insulation of the equipment to be protected. (EC180/87) ## 36.31 Idem The employer shall ensure that grounding conductors shall be mechanically protected at places where they are likely to be damaged. (EC180/87) ## 36.32 Prevention of accidental contact The employer shall ensure where it is impossible or impracticable to enclose electrical circuits or current-carrying parts of electrical equipment operating at 50 V AC or more to ground, accidental contact by persons or objects shall be prevented by installing the circuits or equipment in rooms or enclosures which are accessible to authorized persons only or on balconies, galleries or platforms so elevated and arranged as to exclude unauthorized persons. (EC180/87) ## 36.33 Pole safety and stability (1) Before workers start to climb or support themselves on any pole or structure, or before…

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# To construction work, as defined in $ 1910.12, nor (cont.) ## Battery handling. (cont.) When taking specific gravity readings, the open end of the hydrometer shall be covered with an acid resistant material while moving it from cell to cell to avoid splashing or throwing the electrolyte. ## 1910.268(b)(3) Employers must provide employees with readily accessible, adequate, and appropriate first aid supplies. A non-mandatory example of appropriate supplies is listed in appendix A to 29 CFR 1910.151. ## 1910.268(b)(4) Hazardous materials. Highway mobile vehicles and trailers stored in garages in accordance with $ 1910.110 may be equipped to carry more than one LP-gas container, but the total capacity of LP-gas containers per work vehicle stored in garages shall not exceed 100 pounds of LP-gas. All container valves shall be closed when not in use. 1910.268(b)(5) Compressed gas. When using or transporting nitrogen cylinders in a horizontal position, special compartments, racks, or adequate blocking shall be provided to prevent cylinder movement. Regulators shall be removed or guarded before a cylinder is transported. Submit Feedback ## 1910.268(b)(6) Support structures. No employee, or any material or equipment, may be supported or permitted to be supported on any portion of a pole structure, platform, ladder, walkway or other elevated structure or aerial device unless the employer ensures that the support structure is first inspected by a competent person and it is determined to be adequately strong, in good working condition and properly secured in place. 1910.268(b)(7) Approach distances to exposed energized overhead power lines and parts. The employer shall ensure that no employee approaches or takes any conductive object closer to any electrically energized overhead power lines and parts than prescribed in Table R-2, unless: ## 1910.268(b)(7)(i) The employee is insulated or guarded from the energized parts (insulating gloves rated for the voltage in…

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# Équipement électrique (cont.) ## Code de directives pratiques 2022-79 (cont.) 91-191 Loi sur l'hygiène et la sécurité au travail O-0.2 (g) a description of the means employed to restrict the access of unqualified persons to the work area. - 287.41(2) An employer shall use CSA Standard Z462-15, "Workplace electrical safety" or a standard of- fering equivalent or better protection as a guide for the selection of personal protective equipment and other pro- tective equipment that employees are required to use. - 287.41(3) Before commencing work on or near ener- gized exposed parts of electrical equipment, an employer or a contractor shall inform the employees involved in the work of the content of the code of practice and the supervisor shall document the communication of the in- formation. - 287.41(4) The requirements of subsection (3) apply whenever there is a change in the employees involved in the work on or near energized exposed parts of electrical equipment. - 287.41(5) Whenever there is a change in the electrical equipment, an employer and a contractor shall each en- sure that a new code of practice is established for the electrical equipment that contains the information set out in subsection (1). - 287.41(6) An employer shall ensure that a copy of the code of practice is readily available to employees. - 287.41(7) An employee shall comply with the code of practice and an employer shall ensure that employees comply with the code of practice. 2022-79 ## Main service switches and temporary panel boards - 287.5 An employer shall ensure that main service switches and temporary panel boards of electrical equip- ment (a) are securely mounted on sufficient supports on an upright position, (b) are kept clear of any obstructions for one metre in front and two metres headroom, g) une description des moyens utilisés pour restrein- dre l'accès des personnes non qualifiées à l'aire de travail. - 287.41(2) L'employeur utilise la norme Z462-F15 de …

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# TABLE S-5 (cont.) ## 1910.333(c)(4) "Illumination." (cont.) 1910.333(c)(5) "Confined or enclosed work spaces." When an employee works in a confined or enclosed space (such as a manhole or vault) that contains exposed energized parts, the employer shall provide, and the employee shall use, protective shields, protective barriers, or insulating materials as necessary to avoid inadvertent contact with these parts. Doors, hinged panels, and the like shall be secured to prevent their swinging into an employee and causing the employee to contact exposed energized parts. 1910.333(c)(6) "Conductive materials and equipment." Conductive materials and equipment that are in contact with any part of an employee's body shall be handled in a manner that will prevent them from contacting exposed energized conductors or circuit parts. If an employee must handle long dimensional conductive objects (such as ducts and pipes) in areas with exposed live parts, the employer shall institute work practices (such as the use of insulation, guarding, and material handling techniques) which will minimize the hazard. ## 1910.333(c)(7) "Portable ladders." Portable ladders shall have nonconductive siderails if they are used where the employee or the ladder could contact exposed energized parts. 1910.333(c)(8) "Conductive apparel." Conductive articles of jewelry and clothing (such a watch bands, bracelets, rings, key chains, necklaces, metalized aprons, cloth with conductive thread, or metal headgear) may not be worn if they might contact exposed energized parts. However, such articles may be worn if they are rendered nonconductive by covering, wrapping, or other insulating means. 1910.333(c)(9) "Housekeeping duties." Where live parts present an electrical contact hazard, employees may not perform housekeeping duties at such close distances to the parts that there is a possibility of contact, unless adequate safeguards (such as insulating equipment or barriers) are provided. Electrically c…

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# PART 36 - ELECTRICITY (cont.) ## 36.20 Distances from energized conductors (cont.) PART 36 - ELECTRICITY Section 36.21 Occupational Health and Safety Act General Regulations apparatus, machine, machine component, material or property within a distance of energized electrical conductors closer than as specified in the following table: <table><tr><th>Nominal Phase to Phase</th><th>Minimum Distance</th></tr><tr><td>Voltage of Live Power Line</td><td></td></tr><tr><td>Up to 750 volts</td><td>900 mm (3 ft.)</td></tr><tr><td>751 100,000 volts</td><td>3 600 mm (12 ft.)</td></tr><tr><td>100,001 250,000 volts</td><td>5 200 mm (17 ft.)</td></tr><tr><td>250,001 345,000 volts</td><td>6100 mm (20 ft.)</td></tr></table> (EC180/87; 126/21) ## 36.21 Instructions from utility A worker shall not commence the work outlined in section 36.20 where the voltage is in excess of 345,000 V until the employer has received instructions on proper procedures from the electrical utility owning or operating the conductors. (EC180/87; 126/21) ## 36.22 Safety precautions Before an employer commences work which is liable to bring any person, apparatus, machine, component, material or property closer to overhead electrical conductors than the distance stipulated in section 36.20 he shall, before proceeding, contact the electrical utility owning or operating the conductors and shall ensure that (a) the conductors are properly de-energized; or (b) the energized electrical conductors or equipment are adequately insulated or guarded. (EC180/87) ## 36.23 Idem The employer shall ensure that when structural repairs, extensions, paint work or any other similar type of work is to be undertaken near energized electrical conductors or equipment, the employer in charge of the work shall ensure that (a) the conductors are properly de-energized; or (b) the energized electrical conductors or equipment are adequately insulated or guarded. (EC180/87) ## 36.24 Metal ladders The employer shall ensure…

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# To construction work, as defined in $ 1910.12, nor (cont.) ## 1910.268(b)(7)(i) (cont.) The energized parts are insulated or guarded from the employee and any other conductive object at a different potential, or 1910.268(b)(7)(iii) The power conductors and equipment are deenergized and grounded. Table R-2 - Approach Distances to Exposed Energized Overhead Power Lines and Parts <table><tr><th>Voltage range (phase to phase, RMS)</th><th>Approach distance (inches)</th></tr><tr><td>300 V and less</td><td>(1)</td></tr><tr><td>Over 300V, not over 750V</td><td>12</td></tr><tr><td>Over 750V not over 2 kV</td><td>18</td></tr><tr><td>Over 2 kV, not over 15 kV</td><td>24</td></tr><tr><td>Over 15 kV, not over 37 kV</td><td>36</td></tr><tr><td>Over 37 kV, not over 87.5 kV</td><td>42</td></tr><tr><td>Over 87.5 kV, not over 121 kV</td><td>48</td></tr><tr><td>Over 121 kV, not over 140 kV</td><td>54</td></tr></table> Submit Feedback 1 Avoid contact. 1910.268(b)(8) Illumination of field work. Whenever natural light is insufficient to adequately illuminate the worksite, artificial illumination shall be provided to enable the employee to perform the work safely. ## 1910.268(c) Training. Employers shall provide training in the various precautions and safe practices described in this section and shall insure that employees do not engage in the activities to which this section applies until such employees have received proper training in the various precautions and safe practices required by this section. However, where the employer can demonstrate that an employee is already trained in the precautions and safe practices required by this section prior to his employment, training need not be provided to that employee in accordance with this section. Where training is required, it shall consist of on-the-job training or classroom-type training or a combination of both. The employer shall certify that employees have been trained by preparing a certification record which include…

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# PART 36 - ELECTRICITY (cont.) ## 36.33 Pole safety and stability (cont.) PART 36 - ELECTRICITY Section 36.34 Occupational Health and Safety Act General Regulations ## 36.34 Obstructions Mail boxes, signs, clotheslines or other hazards shall not be allowed on or in close proximity to poles upon which workers are required to work. (EC180/87; 126/21) ## 36.35 Access to switches The employer shall ensure that means of access to switches and meters shall be clear of obstructions at all times. (EC180/87) ## 36.36 Marking The employer shall ensure that all electrical distribution switches and controls shall be clearly marked to indicate the machinery or equipment which they serve. (EC180/87) ## 36.37 De-energizing responsibility The employer shall ensure that before workers are required or permitted to work on any part of an electrical power system which, for reasons of safety, must be handled in a de-energized condition, the worker in charge shall ensure that the part of the system being worked on is de- energized and grounded, and that the controls are tagged and locked to prevent the system from being re-energized. (EC180/87; 126/21) ## 36.38 Procedure When the control devices are not under the direct control of the workers, they shall receive assurance from the worker in charge of the control device that the work may safely proceed and the assurance shall be recorded by the worker giving the assurance. (EC180/87; 126/21) ## 36.39 Idem Before commencing the work on the de-energized part of the system, the worker shall, by short-circuiting and grounding or other effective means, ensure that the part or section is de- energized and that all workers are protected against re-energization. (EC180/87; 126/21) ## 36.40 Live electrical conductor (1) The employer shall take every practicable step to prevent danger to persons on the work site from any live electrical conductor or apparatus that might be a source of danger. - Tool grounding (2) No person shal…