**January 2000
**

Test your knowledge of the code, by taking E.T.E.'s code quiz.

There are 10 questions, which are multiple choice.

*Quiz by Bob Keis*

**Question #1:**

A motor controller for a 20 hp. Design E motor if not marked
for use with a Design E motor shall have a rating of not less than ________ horsepower.

(A) 20.0

(B) 25.5

(C) 28.0

(D) 40

**Question #2:**

An installation of 150 feet of rigid nonmetallic conduit
installed in a location where the maximum summer temperature is 105 deg F. and the winter
temperature could go down to 10 deg. F. would need expansion fittings to allow for _______
inches of movement.

(A) 3.8

(B)
4.7

(C) 5.7

(D) 7.05

**Question #3:**

Power for a legally required standby system shall be
available _________.

(A) immediately

(B) within 10 seconds

(C) within 30 seconds

(D) within 60 seconds

**Question #4:**

Where a conduit run passes from a nonclassified location into
a Class I, Div 1 location, the only fitting permitted between the boundary and the seal
fitting is a ________.

(A) explosionproof
union

(B) explosionproof coupling

(C) explosionproof reducer

(D) explosionproof condulet

**Question #5:**

What is the maximum number of 120-volt 15- or 20-amp duplex
receptacles that can installed on a 20 ampere circuit in a motel unit?

(A) 10

(B)
13

(C) 15

(D) unlimited

**Question #6:**

1 inch Electrical Metallic Tubing (EMT) has an internal
diameter of ________ inches.

(A) 1.000

(B) 1.049

(C)
1.054

(D)
1.063

**Question #7:**

17). A recreational vehicle park has a total of 42 sites.
What is the demand factor for sizing the service conductors?

(A) 23%

(B) 42%

(C) 41%

(D) none

** Question #8:
**A 30 ampere circuit is run underground to a
residential garage. If this circuit runs under the driveway what is the minimum burial
depth permitted?

(A) 12 inches

(B) 18 inches

(C) 24 inches

(D) 30 inches

**Question #9:**

The ampacity of supply conductors to a resistance welder with
a duty cycle of 20% and a primary current rating of 32 amperes and is wired for a specific
operation is ________ amperes.

(A) 40

(B) 32

(C) 18

(D)14

**Question #10:**

A 4" rigid metal conduit is installed under a 8"
thick concrete highway. What is the minimum depth of the ditch to contain this raceway?

(A) 12
inches

(B) 16 1/2 inches

(C) 24 inches

(D) 28 1/2 inches

**Thanks for taking E.T.E.'s Code
quiz!**

If you find any discrepancies please feel free to email E.T.E. at http://www.elec-toolbox.com/email.htm.

Back to ETE's Code Quiz Page

**This month Code quiz was
brought to you by Bob Keis.**

Design by TC