January 2000
Test your knowledge of the code, by taking E.T.E.'s code quiz.
There are 10 questions, which are multiple choice.
Based on the 1999 Code Book.
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.
