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H1 & BC hydro services connection
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H1 & BC hydro services connection

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Questions and Answers

The point of attachment must be within 7 meters above the ground.

True

Across streets, lanes, alleys and pipeline right-of-way:

  • 5.5 m (correct)
  • 5 m
  • 6 m
  • 7 m
  • Across driveways to commercial and industrial premises:

  • 5 m
  • 5.5 m (correct)
  • 6 m
  • 10 m
  • Across driveways to residential garages:

    <p>4.5 m</p> Signup and view all the answers

    Across ground normally accessible to pedestrians only:

    <p>3.5 m</p> Signup and view all the answers

    The location of the service entrance (wire holder) must not create an aerial trespass and shall be:

    In direct line of sight with BC Hydro's service pole On the wall of the building facing the power supply; or No further than 1 m (3 ft) back, on the side of the building closest to BC Hydro's source or stub off

    <p>True</p> Signup and view all the answers

    If a roof mast is required to meet the minimum vertical clearance above grade, it must be located within 45 centimetres (18 in) from the edge of the roof within reach of the installer's ladder. Rain gutters must be reinforced to be capable of holding the weight of an installer on a ladder without damaging the gutter.

    <p>True</p> Signup and view all the answers

    Customer-owned poles with utility services must be accessible by a bucket truck with a relatively even and drivable surface, and be within 3 meters of a lane or roadway.

    <p>True</p> Signup and view all the answers

    The maximum service length from a BC Hydro pole to the customer's point of attachment is 30 metres (100 feet). If the service length exceeds 30 metres, an intermediate pole may be required.

    <p>True</p> Signup and view all the answers

    Meters must not be installed inside carports, garages or breezeways, or in any part of a structure that may potentially be enclosed or within 1 metre of a natural gas relief discharge device or vent, or 3 within metres of a propane gasrelief discharge device or vent

    <p>True</p> Signup and view all the answers

    Meters must be installed between above finished grade

    <p>1.5 &amp; 1.8 metres (5 &amp; 6 feet)</p> Signup and view all the answers

    The meter base is not more than 1 metre (3 feet) from the corner of the building closest to BC Hydro's source If the site has more than one meter base, the meters are clearly marked (i.e. House and Suite, A and B)

    <p>True</p> Signup and view all the answers

    The roof mast is located within 45 centimetres (18 inches) from the edge of the roof within reach of the installer's ladder

    <p>True</p> Signup and view all the answers

    For 120/240V services up to 600A, BC Hydro will accept installation of the service duct and meter base inside the building wall if our requirements are met, specifically:

    there is a minimum of 50 mm concrete surrounding the duct and there is a 25 mm access cavity around the meter base.

    <p>True</p> Signup and view all the answers

    The minimum depth of burial for all ducts shall be 900 mm below the finished grade.

    <p>True</p> Signup and view all the answers

    The customer service conduit or duct must be gray, 75 mm (3 inches) in diameter, rigid DB2 PVC.

    <p>True</p> Signup and view all the answers

    The duct is to be installed between 150 mm (6 inches) pit run base and 300 mm (12 inches) of pit run cover as per BC Hydro ES-54 Standards.

    <p>True</p> Signup and view all the answers

    If the total number of bends installed between BC Hydro's duct stub off point and the meter base exceeds a composite angle of 135 degrees, a pull box may be required.

    <p>True</p> Signup and view all the answers

    If the total number of bends installed between BC Hydro's duct stub off point and the meter base exceeds a composite angle of 135 degrees, a pull box may be required.

    <p>True</p> Signup and view all the answers

    The minimum radius of any conduit bend must be 900 mm (3 feet).

    <p>True</p> Signup and view all the answers

    BC Hydro prefers that ducts are installed outside of the finished building wall. For 120/240V services up to 600A, ducts installed within the building wall must be encircled by at least 50 mm of concrete.

    <p>True</p> Signup and view all the answers

    Why is a single-phase, three-wire system needed for single family dwelling ?

    <p>to provide two different voltages: small appliance need only 120 V to operate, large appliance require 240 V ( e.g range, dryer etc.)</p> Signup and view all the answers

    How is a 120/240 V, three-wire system obtained ?

    <p>By connecting a wire to the midway point of the secondary winding of the transformer</p> Signup and view all the answers

    How is energy consumption recorded ?

    <p>by a killowatt-hour meter</p> Signup and view all the answers

    Why should the neutral be grounded?

    <p>To limit the shock hazard to 120 V and provide a path for operating overcurrent devices.</p> Signup and view all the answers

    Why should the neutral never be fused?

    <p>To prevent an unequal division of voltage across the loads should a break occur or to prevent from catch fire.</p> Signup and view all the answers

    What is the most common type of panelboard that is installed for a main service?

    <p>A combination panelboard</p> Signup and view all the answers

    List two ways electrical energy is brought into a building. Rule: 6-300 & 6-302

    <p>Overhead service &amp; underground service</p> Signup and view all the answers

    What is the maximum voltage rating of neutral supported cable? table D1

    <p>600 V</p> Signup and view all the answers

    What is a common name for the insulator that supports the serice conductors.

    <p>Emily knob or insulator rack</p> Signup and view all the answers

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