NEC Journeyman Electrician Exam : 300+ Questions & Verified Answers (Pass Guaranteed)

Journeyman Electrician Exam Questions &
Verified Answers.
1/4" ~CORRECT ANSWER~✓✓Threads of drainage fittings shall be tapped as to
allow _____ pitch per foot



4 lbs ~CORRECT ANSWER~✓✓Lead used for safe pans shall not be less than
________ per square foot



Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV ~CORRECT
ANSWER~✓✓Name 3 allowable materials for the DWV system "underground"



1-1/4" - 1 dfu's

1-1/2" - 3 dfu's

2" - 4 dfu's

3" 6 dfu's

4" - dfu's ~CORRECT ANSWER~✓✓What are the fixture unit values for the
following traps



Double fixture fitting ~CORRECT ANSWER~✓✓What type of fitting is used for
continuous waste and venting of lavatories back to back?



1" ~CORRECT ANSWER~✓✓Caulk joints for cast iron bell and spigot shall be
filled with molten lead to a depth of not less than ________?

,Wye, Combination Wye w/ 1/8 bend, Long sweep ~CORRECT
ANSWER~✓✓What type of fitting or fittings can be used to connect horizontal
drainage to another horizontal drainage line?



- Each horizontal drainage pipe shall be provided with a cleat at its upper
terminal

- Horizontal run more than 100'

- Each horizontal change of direction exceeding 135°

- Front Main Cleanout ~CORRECT ANSWER~✓✓Cleanout locations required by
code



100' ~CORRECT ANSWER~✓✓Maximum distance a cleanup can be spaced
apart



12"

18" ~CORRECT ANSWER~✓✓Minimum clearance in front of a cleanup for 2" or
less

Minimum clearance in front of a cleanup for 2" or more



20' ~CORRECT ANSWER~✓✓Underfloor cleanup shall not be located more than
_____ from an access door, trap door, or crawl hole



Back Water Valve ~CORRECT ANSWER~✓✓When plumbing fixtures are
installed on a floor level lower than the next upstream manhole cover of the
sewer, such drainage piping shall be protected from backflow of sewage by a
____________

,20 ~CORRECT ANSWER~✓✓Sewage ejectors receiving the discharge of water
closets or ruinals shall have a discharge capacity not less than ___ gallons per
minute



2" ~CORRECT ANSWER~✓✓What is the minimum size discharge pipe for an
ejector installed in a single dwelling?



2" ~CORRECT ANSWER~✓✓The lowest inlet connected to the ejector pump
shall have a clearance of not less than ____ from the high water or starting level
of the sump.



Yes, with prior approval of the AHJ ~CORRECT ANSWER~✓✓Can macerating
toilet systems be installed instead of a sewage pump system



3/4" ~CORRECT ANSWER~✓✓What is the minimum size discharge pipe for a
macerating toilet system



1/4" per foot ~CORRECT ANSWER~✓✓What is the minimum pitch required
fora 2" horizontal drain?



Swing check valve ~CORRECT ANSWER~✓✓The discharge line from an ejector
pump shall be provided with an accessible ___________ and gate or ball valve.



Downstream of the backwater valve ~CORRECT ANSWER~✓✓Where shall the
gate valve be located on the discharge line on an ejector pump

, 8' ~CORRECT ANSWER~✓✓Drainage connections shall not be made into a
drainage piping system within ________ of an vertical or horizontal change in
direction of a stack containing suds producing fixtures.



10' Head of water for 15 minutes

5 psi for and air test ~CORRECT ANSWER~✓✓What are the requirements when
testing the DWV system Water and Air?



When the dwelling is more than 200' away from the sewer. ~CORRECT
ANSWER~✓✓When is the public sewer considered not being available?



2' away from the building ~CORRECT ANSWER~✓✓At what point does the
building sewer begin?



DFU's ~CORRECT ANSWER~✓✓How is the size of the building sewer
determined?



300' ~CORRECT ANSWER~✓✓What is the maximum distance allowed between
approved manholes?



12" ~CORRECT ANSWER~✓✓When a water pipe and sewer pipe are placed in a
common trench what is the minimum distance above the top of the sewer line to
the bottom of the water pipe?