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Parkade Electrical Installation Requirements

GENERAL

  • A 50mm sill or a sloped grade is required to separate the 50mm hazardous location of the parkade from the mechanical rooms, electrical rooms, etc. (see 20-102)
  •  Metal electrical conduits, junction and fixture boxes are not to be embedded within a suspended concrete slab that will have cars parked on it due to the corrosion interaction creating structural problems . [CAN/CSA S413-94 clause 6.4.2 & Appendix D

SUMP PUMP INSTALLATIONS

 [(see attached drawing)]

  • Pump control panel for sump pumps to be provided with intrinsic barriers for each float switch
  • SOW (extra hard usage) cable is required to supply sump pump motors.
  • Installation arrangement must be such that the hazardous location of sump is not transmitted to pump controller
  • 28-600 (2) Disconnecting means required  a lockable isolation switch required ahead of sump pump control panel or labeled, lockable disconnect means provided at electrical distribution (permanently installed breaker locks at panel are acceptable)
  • Mechanical protection is to be provided for the pump controller and cabling, conduits, etc.

LIGHTING

BCEC 20-110 Equipment above hazardous areas

  • Fixed equipment that is less than 3.6 m above the floor level and that may produce arcs, sparks, or particles of hot metal, such as cut-outs, switches, charging panels, generators, motors, or other equipment (excluding receptacles and luminaires) having make-and-break or sliding contacts, shall be the totally enclosed type or constructed to prevent escape of sparks or hot metal particles.
  • Permanently installed luminaires that are located over lanes through which vehicles are commonly driven or that may otherwise be exposed to physical damage shall be located not less than 3.6 m above floor level unless they are of the totally enclosed type or constructed to prevent escape of sparks or hot metal particles.

If the fixture is not protected by placement between building structural members and less than 3.6m from the floor, you will be required to install the totally enclosed type. This excludes the cage over lamp only type. The fixture must provide for a lens over the lamps providing the protection required by 20-110(2)

“Surrey’s interpretation applies this to areas where vehicles are commonly driven and not to parking stalls.”

  • Emergency lighting to operate on failure of the lighting in the area served as per 46-304(4).
  • EMT and / or rigid pipe drops to have additional independent supporting means.
  • Conductors in raceways must meet the requirements of 12-904(2c) and 46-108(4).
  • Totally enclosed fixtures over lanes with ceiling height less than 3.6m over frequent traffic areas to meet the requirements of 20-110(2).
  • Guards may be required on low ceilings (height & protection requirements).
  • Emergency lighting to operate on failure of the lighting in the area served.

HEAT TRACING [see Bulletin 98-3]

  • An installation permit issued to a licensed contractor and inspection will be required.
  • Heat trace cable to be Ground Fault protected as per 62-300(4).
  • Heat trace cable run on insulated piping to have markings on the outside insulation (per 62-316).

VENTILATION

  • Lockable isolation switch required ahead of ventilation fans or labeled, lockable disconnect means provided at electrical distribution (permanently installed breaker locks at panel are acceptable)