Name ___________________________________ Date __________________
Math Problems Module 00102-04
1.
A parking lot contains 96 light fixtures. If only 8 fixtures can be wired to a lighting
circuit, how many circuits will be needed to feed the parking lot?
2.
A stock trailer contains 395 boxes of ½” EMT
connectors. Crew #1 used 170 boxes; Crew
# 2 used 98 boxes, Crew # 3 used 58 boxes, and Crew # 4 used 60 boxes. How many boxes are left?
3.
Your foreman has given you the task of switching and
plugging. ( installing receptacles and switches ) You have 26 rooms and each room contains 6
outlets and two 3-way switches. In order
to avoid wasting time walking back and forth to the trailer, how many switches
and outlets should you pick up first thing in the morning?
4.
A hospital has 580 patient care rooms each needing 2
emergency circuit receptacles. How many
emergency circuit receptacles should be ordered?
5.
A conduit crew is running four 2 inch EMT runs. The pipes will be installed between two
junction boxes 190 feet apart. 2”EMT
comes in ten foot lengths. How many couplings will this crew need to install
the pipes?
6.
There are sixteen 2” rigid metal conduits that are to
enter the back of a NEMA 1 junction box.
Each EMT will require two 2” locknuts and one 2” bushing. What is the
total number of locknuts and bushings required?
7.
Your foreman has told you to cut cable for a wire
pull. There are four #500MCM cables to
be pulled through a 4” EMT that is 188 feet long. The foreman has also told you to add an
additional ten feet onto your measurement at end of the run. How long should
each length of #500MCM be? What is the
total length of #500MCM cable required in feet?
8.
An office building contains 6,240 lighting
fixtures. Every four fixtures is
supplied by a 4” square box. How many 4” square boxes are needed?
