Question

What size Intermediate Metal Conduit is required for Four (4) #600 kcmil Type THW Conductors?

A.	2"
	B.	2 1/2"
	C.	3"
	D.	3 1/2"
	E.	4"
	F.	5"
	G.	6"

What is the minimum number of duplex outlets required along a 32 foot living room wall?

	A.	2
	B.	3
	C.	4
	D.	5
	E.	6
	F.	7
	G.	8
	H.	9

Answer 1

ANSWER - 1 ==> Area of one #600 kcmil Type THW Conductor = 0.9729 sq. inches

Therefore, Area of 4 #600 kcmil Type THW Conductor = 4*0.9729 sq. inches = 3.8916 sq. inches

For Intermediate Metal Conduit with 4 conductors (3 or more conductors), the filling is 40 %. Using "Dimension and fill Table", we have ==>

3 inch corresponds to 3.169 sq-inch wire area

3-1/2 inch corresponds to 4.234 sq-inch wire area

Our area is 3.8916 sq. inches. So, 3-1/2 inch is appropriate for us.

Therefore, (D) is correct answer.

ANSWER - 2 ==> According to standards, along a wall in a living room, you have to ensure that distance along the wall of any point in the room must not be more than 6 ft. This means a receptacle can cover 12 ft along the wall. Here, wall size is 32 ft.

Therefore, number of receptacles required = nearest greater integer (32 ft / 12 ft) = 3

Therefore, (B) is correct answer.