Installation of Electrical Equipment - Section 26

Question 1

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

Answer 1

3.6 meters

Question 2

What is an “outlet”?

Answer 2

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

Question 3

Why would a battery room be used?

Answer 3

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

Question 4

CEC rules for battery installation protect against what hazards?

Answer 4

• Short circuits
• Corrosion of conductors
• Battery leakage

Question 5

Where could one find general rules regarding receptacles?

Answer 5

Section 26-700

Question 6

Do battery rooms need ventilation?

Answer 6

Yes, to prevent buildup of hydrogen gas.

Question 7

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

Answer 7

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

Question 8

What is a “branch circuit”?

Answer 8

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

Question 9

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

Answer 9

1 meter or less.

Question 10

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

Answer 10

Diagram 1 and 2.

Question 11

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

Answer 11

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

Question 12

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

Answer 12

12

Question 13

Who must buy the equipment for a unit substation?

Answer 13

The building owner.

Question 14

What is askarel?

Answer 14

A trade name for oil containing PCBs;

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

Question 15

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

Answer 15

Amount of liquid.

Question 16

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

Answer 16

125%

Question 17

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

Answer 17

No, but we must include one on the secondary.

Question 18

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

Answer 18

Table 50.

Question 19

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

Answer 19

Down.

Question 20

Which transformers do not have overcurrent protection?

Answer 20

Current transformers.

Question 21

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

Answer 21

10 A (L.V.);

3 A (H.V.).

Question 22

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

Answer 22

A load center;

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

Question 23

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

Answer 23

Yes, but not Class A;

No more than 10 mA for 2.7 s.

Question 24

How large is a typical Sub Pump?

Answer 24

7-13 cm in diameter;

60-120 cm long.