Code

Question 1

When asked to find conductor ampacities of two different wires in the same conduit, explain how to find their ampacities

Answer 1

Use tables 1-4 to find individual ampacities based on lowest temperature.

Question 2

What table do you use to find conductor ampacities in raceway or free air

Answer 2

1-4

Question 3

What table to use for ambient temperatures above 30 degrees

Answer 3

5A

Question 4

How do you use the ambient temperature multiplier?

Answer 4

You apply the multiplier to individual temperatures of insulation, NOT the lowest when given multiples.

Question 5

What table do you find ampacities for neutral support cable?

Answer 5

Table 36A and 36B

Question 6

What rule applies to neutral support cable allowable ampacities?

Answer 6

4-004 5

Question 7

What rule applies to allowable ampacities for conductors sharing the same raceway?

Answer 7

4-004 14

Question 8

What rule applies to marked and unmarked equipment temperatures?

Answer 8

4-006

Question 9

Which rule will you find information about pull box or junction boxes?

Answer 9

12-3036

Question 10

What is Table 22? What code rule is related?

Answer 10

Space for insulated conductors in boxes. Rule 12-3034

Question 11

What is table 23 and what rule is related?

Answer 11

Number of insulated conductors in boxes. Rule 12-3034

Question 12

Which section would you find information on installation of a TX?

Answer 12

Section 26, installation of electrical equipment.

Question 13

What does section 2 outline?

Answer 13

Administrative

Question 14

Where can you find marking of equipment?

Answer 14

2-100

Question 15

What does code rule 2-128 Fire Spread state?

Answer 15

Electrical installations made so probability of fire spread is made minimum
Cable shall be properly closed or sealed

Question 16

What does code rule 2-138 Insulation Integrity state?

Answer 16

All wiring shall be free from short circuits and grounds

Question 17

What rule is fire spread?

Answer 17

2-128

Question 18

What rule is insulation integrity?

Answer 18

2-138

Question 19

Rule 2-202 2) suitable barriers or covers shall be provided for bare live parts within ______ of non electrical components that may require servicing.

Answer 19

900mm

Question 20

Rule 2-308 1) working space of _____ shall be provided and maintained around electrical equipment that _______

Answer 20

1m, have renewable parts (fuses, breakers), disconnecting means, operating means, or require examination, operation, adjustment, or maintenance.

Question 21

Where can you find information about working space around equipment?

Answer 21

Section 2. 2-308, 2-310, 2-312, 2-314

Question 22

Where can you find enclosure types?

Answer 22

Section 2. 2-400. Table 65.

Question 23

Fuses provide ______ to protect ________, which table should you use to find the rating to protect the conductor

Answer 23

Overcurrent protection to protect conductors. Use table 13 to find rating or setting of overcurrent devices protecting conductors

Question 24

What minimum size disconnect switch is required on a capacitor circuit?

Answer 24

Rated not less than 135% of rated current of the capacitor. Rule 26-214

Question 25

What conductor ampacity is used for a capacitor circuit branch or feeder circuits?

Answer 25

Not less than 135% of rated current.

Question 26

How do you size tap conductors for a capacitor?

Answer 26

Find rated current (may be given), DO NOT adjust rated current by 135%, use tables 1-4 to find applicable wire size based on wire temp and current rating before 135% is applied, divide by 3 (rule 26-208 2 b), that amount is your minimum size required.

Question 27

To what PF is a motor allowed to be corrected to when using a capacitor? What rule?

Answer 27

Not exceed no load to pf unity. 26-218 2 a

Question 28

Where will you find information on branch circuits?

Answer 28

Section 26. 26-650

Question 29

Which table do you find current flow in flexible cord

Answer 29

Table 12

Question 30

Which rule applies to conductor derates?

Answer 30

4-004 Ampacity of wires and cables

Question 31

Do you count neutrals when calculating conduit fill?

Answer 31

Yes

Question 32

When you have ‘unmarked equipment’ where do you find temperature for it?

Answer 32

4-006 2

Question 33

Where can I find information on working space

Answer 33

Section 2

Question 34

The ampacity of conductors of different temperature ratings installed in the same raceway shall be determined by ________

Answer 34

The conductor having the lowest temperature rating

Question 35

What is the temperature limitations for equipment rated under 100A?

Answer 35

60 degrees

Question 36

What is the temperature rating for equipment rated more than 100A?

Answer 36

75 degrees

Question 37

Consumer service conductors should be not less than ______

Answer 37

#8 Al, or #10 Cu