Chapter 9 Tables And Annex C

Question 1

Maximum conductor fill rate for all types of conduit over 24 inches in length with over two conductors including cellular concrete raceway is

Answer 1

Chapter 9 table 1

40%

Question 2

In electrical tubing nipple is defined as tubing blank or less in length and may be filled to a maximum percentage of the total available internal square inch area of the tubing

Answer 2

Chapter 9 table 4

24” and 60%

Question 3

How many number 8THHW compact conductors can be placed inside 1 inch EMT trade size conduit

Answer 3

Annex c table C1 A

6

Question 4

What size RMC pipe is needed for the total square inch area include installation of four number 8PHHN and six number 10 THHN wires

Answer 4

Table 5 and table 4

1 inch

Question 5

How many number 10 RHW conductors can be placed inside a 1 inch ENT pipe

Answer 5

Annex c table c2

10

Question 6

Class three inherently limited power source circuits are not rated for over how many volts

Answer 6

Chapter 9 table 11 B

100 V