ANSWERS GRADED A+
✔✔Receptacle wall spacing? - ✔✔At no point along the floor line is more than 6ft from a
receptacle
✔✔Within how close to the wall must a receptacle be to be counted as a required wall
outlet - ✔✔18"
✔✔Countertop receptacle spacing? - ✔✔At no point along the counter is more than 2ft
from a receptacle
✔✔Countertop outlets no higher than? - ✔✔20"
✔✔Synchronous speed of motor formula? - ✔✔SS= 120xfrequency / poles
✔✔Celcius to Fahrenheit - ✔✔F = (9/5xC)+ 32
C= (F-32) 5/9
✔✔Commercial setting receptacle VA rating? - ✔✔180VA per yoke
✔✔Demand factor for 6 household electric clothes dryers? - ✔✔75%
✔✔Wire clearance from roof? - ✔✔8ft
✔✔75A is a standard sized circuit breaker - ✔✔False
✔✔Data room disconnect location? - ✔✔Near the exit door
✔✔Less than 1000v ac and 1500v dc can occupy the same enclosure? - ✔✔True
✔✔Patient bed requirements? - ✔✔supplied by at least two branch circuits, one from
the critical branch and one from the normal system
✔✔What kind of motor isn't induction? - ✔✔DC motor
✔✔Operating room required circuits? - ✔✔minimum of 36 receptacles divided between
at least two branch circuits
✔✔GEC size on concrete encased electrode? - ✔✔Minimum 4 awg
✔✔GEC size for 500 kcmil aluminum - ✔✔1/0 aluminum
, ✔✔Light fixture more than 50lbs shall be supported independently from the outlet box
unless the box is rated for the fixtures weight - ✔✔True
✔✔Continuous loads are calculated at what percentage of the maximum current rating
of the overcurrent device? - ✔✔125%
✔✔When in parallel, resistance is lower and current increases - ✔✔True
✔✔Adjustment factor for 4-6 current carrying conductors in a raceway? - ✔✔80%
✔✔Types of electrical faults - ✔✔open, ground fault and change of electrical values
✔✔Minimum Emergency Fuel duration - ✔✔2 hours
✔✔Megohmeters are used to test - ✔✔Resistance to ground
✔✔Current multiplier measures: - ✔✔Insulation
✔✔Resistance in series: - ✔✔Rt = R1 + R2 + R3
✔✔Resistance in parallel - ✔✔Rt= 1/ (1/r1) + (1/r2) + (1/r3)
✔✔Numbers to remember - ✔✔208.333 , 4.30 , 3840w , .506
✔✔Transformers are ___% effective - ✔✔90%
✔✔Ground wire for transformer - ✔✔1000
✔✔2000q ft with 34 receptacles and 12 lighting at 100 watts - ✔✔6000va
✔✔keywords to remember - ✔✔Wrench tight ,
✔✔Breaker size for label - ✔✔5000
✔✔What is the minimum general lighting load permitted by the NEC in a 4500 square
foot warehouse? - ✔✔1125VA
✔✔Raceways sleeves protected from condensation? - ✔✔Shall be sealed
✔✔GFCI protection is required for all 125-volt to 250-volt receptacles - ✔✔True
✔✔Hot legs on the transformer - ✔✔1/4" apart