General Questions

Question 1

Dwelling services are sized at what %

Answer 1

83%

Question 2

Non-coincidental loads are sized at what percent of highest load

Answer 2

125%

Question 3

Feeders less than or equal to 100 amps use what column

Answer 3

60 degree C

Question 4

Capacitors are rated for what percent of total amps

Answer 4

135%

Question 5

How many feet of show window requires it’s own recept

Answer 5

12 ft

Question 6

How many feet above sidewalk must service entrances conductors be

Answer 6

10 feet

Question 7

What is the minimum disconnect size for a commercial building

Answer 7

60 amps

Question 8

What size grounding electrode conductor must be protected from physical damage

Answer 8

6 or smaller

Question 9

Minimum ground rod diameter

Answer 9

5/8”

Question 10

Minimum ground rod spacing

Answer 10

6’

Question 11

Minimum ground ring wire size

Answer 11

2

Question 12

When sizing a disconnect, you must round down if the amperage is below

Answer 12

800 amps

Question 13

Elementary schools require what type of recept

Answer 13

Tamper Proof

Question 14

Car wash recepts are what type of location

Answer 14

Wet location

Question 15

Minimum light pole hand hole size

Answer 15

2”x4”

Question 16

General use snap switches at good for what percent of its rated use?

Answer 16

80%

Question 17

What is the maximum surface temperature of T2A

Answer 17

536 degrees

Question 18

In hospital general care areas, each bed location needs how many recepts

Answer 18

8

Question 19

In hospital critical care areas, each bed location needs how many recepts

Answer 19

14

Question 20

How many inches must separate class 1 and class 2/3 circuits

Answer 20

2 in

Question 21

What is the smallest size conductor that can be run in parallel

Answer 21

1/0

Question 22

Wire for services is sized using what temp column

Answer 22

75 deg C

Question 23

What percent of FLA must motor conductors be sized for?

Answer 23

125%

Question 24

What percent of motor FLA must a disconnect be sized for?

Answer 24

115%

Question 25

For taps between 10’ and 25’, each motor feed must be able to carry what percent of the load

Answer 25

1/3

Question 26

How many watts per HP

Answer 26

746

Question 27

How big is a straight through junction box

Answer 27

Largest Pipe size x 8

Question 28

How big is a angle pull junction box?

Answer 28

Largest pipe x 6 + all other pipes

Question 29

What is the voltage drop formula to find circ mils

Answer 29

(2KIL)/((VD%)(v))

Question 30

What do you multiply voltage by for all 3 phase equations

Answer 30

Square root of 3

Question 31

How do you find single phase neutral amps

Answer 31

Amp difference between 2 legs

Question 32

How do you find 3 phase neutral amps

Answer 32

Total amps / 2

Question 33

Motor overcurrent protection table

Answer 33

430.52

Question 34

How far under waterline must a wet niche fixture be?

Answer 34

18”

Question 35

Conduit to wet niche fixtures must be corrosion resistant and made of

Answer 35

Rigid brass

Question 36

Electrical wires going over a pool must be how high

Answer 36

22.5’

Question 37

Fixed metal parts within 5’ of pool must be

Answer 37

Bonded

Question 38

Minimum distance from the edge of stud to a cable in wall

Answer 38

1 1/4”

Question 39

At what voltage does direct burial cable have to be shielded

Answer 39

2000 volts

Question 40

Minimum space between recessed light fixture and insulation

Answer 40

3 in

Question 41

Conductors supplying several motors shah be rated for

Answer 41

The sum of all motors plus 25% of largest

Question 42

You must use mc or conduit if occupancy is over

Answer 42

100 people