Quiz 5 - Commercial Wiring - Unit 8

Question 1

All panelboards are to be CSA approved.

Answer 1

True
False

Question 2

According to 12-3024 all unused openings shall be,

Answer 2

Closed by covering with tape

Closed by plugs or plates

Closed by devices and/or plates

All of the above

Question 3

Typical panelboard arrangement has,

Answer 3

OCD adjacent connections on the same phase

OCD adjacent on separate phases

OCD across from each other on the opposite phase

OCD across from each other on same phase

All of the above

Both A and C

Both B and D

Both A and D

Question 4

A circuit directory,

Answer 4

Is not necessary in some cases

Is necessary with only residential installations

Is necessary only with commercial installations

Is normally located on the face or inside the panel door

Question 5

The ungrounded conductor can be green or any other colour.

Answer 5

True
False

Question 6

4-032(3c) requires the neutral to be white and,

Answer 6

A,B,C phases are Black, Blue, Red respectively

A,B,C phases are Black, Red, Blue respectively

A,B,C phases are Red, Black, Blue respectively

Both A and C

Question 7

According to 14-606(1) and Figure 8-6

Answer 7

A panelboard OCD shall be rated the same as the feeder overcurrent device

A panelboard OCD shall be rated greater than the rated busbar

A panelboard OCD shall be rated, at maximum, equal to the rated busbar

Both A and C

Question 8

For figures 8-9, 8-10, and 8-11, the tip to tail method for vector addition can be used for solving the neutral current.

Answer 8

True
False

Question 9

4-018 allows sets regulation for neutral sizing and

Answer 9

Assumes all connected loads are resistive

Assumes there are no unbalanced loads

Assumes the unbalanced load is equal across all phases

All of the above