Installation of Electrical Equipment - Section 26 Flashcards

1
Q

In a normal wall space of a single dwelling (bedroom, living room, etc…), what is the maximum distance allowed between receptacles?

A

3.6 meters

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2
Q

What is an “outlet”?

A

A point in the wiring where current is used to supply utilization equipment.

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3
Q

Why would a battery room be used?

A
  • As backup power, an outage could result in a major costly data loss.
  • Communication circuits
  • Emergency lighting
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4
Q

CEC rules for battery installation protect against what hazards?

A
  • Short circuits
  • Corrosion of conductors
  • Battery leakage
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5
Q

Where could one find general rules regarding receptacles?

A

Section 26-700

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6
Q

Do battery rooms need ventilation?

A

Yes, to prevent buildup of hydrogen gas.

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7
Q

Which receptacles in a single dwelling do not need to be tamper resistant?

A

Those behind fixed appliances and any located two meters above the floor.

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8
Q

What is a “branch circuit”?

A

The wiring between the last over current device and a utilization point.

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9
Q

How close to a sink should a receptacle be to require gfci protection?

A

1 meter or less.

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10
Q

Where could one go in the CEC to find graphical configurations for locking and non locking receptacles?

A

Diagram 1 and 2.

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11
Q

If a panel is located between the entrance to a furnace room and the furnace, is a disconnecting switch required?

A

No, the over current device can act as a switch.

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12
Q

How many outlets are typically allowed on a 15A branch circuit?

A

12

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13
Q

Who must buy the equipment for a unit substation?

A

The building owner.

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14
Q

What is askarel?

A

A trade name for oil containing PCBs;

We do not use this anymore and are required to replace it.

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15
Q

What determines whether equipment should be installed in a vault, as opposed to a service room?

A

Amount of liquid.

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16
Q

Conductors from transformers secondaries must have an ampacity of ________ of the sum of rated current.

A

125%

17
Q

If a transformer feeder is suitably protected by an upstream overcurrent, is an individual primary overcurrent device required?

A

No, but we must include one on the secondary.

18
Q

What table should be consulted when choosing overcurrents for a high voltage transformer secondary?

A

Table 50.

19
Q

When sizing transformer overcurrents, generally we round __________ on table 13, unless otherwise stated.

A

Down.

20
Q

Which transformers do not have overcurrent protection?

A

Current transformers.

21
Q

What is the maximum fuse that can be placed on a potential transformer?

A

10 A (L.V.);

3 A (H.V.).

22
Q

What is another name for panelboard? Why are they different from switchboards?

A

A load center;

A switchboard is usually free standing and can often be accessed from the rear.

23
Q

When a sub pump is installed in a alake, should it have GFCI protection?

A

Yes, but not Class A;

No more than 10 mA for 2.7 s.

24
Q

How large is a typical Sub Pump?

A

7-13 cm in diameter;

60-120 cm long.