QUESTIONS AND ANSWERS GRADED A+
✔✔Metal conduit supports? - ✔✔Every 10ft within 3ft of box
✔✔Portable carnival ride emergency disconnects are required within ______ft of
operators station - ✔✔6ft
✔✔Smallest wire you can parallel is? - ✔✔1/0
✔✔___" from the stud drilled - ✔✔1 1/2"
✔✔Overhead service drop smallest wire is? - ✔✔8 awg copper
✔✔Continuous loads is considered how long? - ✔✔3 hours
✔✔Ground identification? - ✔✔Green or green with yellow stripe
✔✔Minimum size of a single family load of 10kva? - ✔✔100A 3 Wire
✔✔On a 4-wire delta connected system high leg marking shall be? - ✔✔Orange
✔✔Is PVC underground considered wet or dry location? - ✔✔Wet
✔✔What is a class 2 division 2 location - ✔✔Location with combustible dust
✔✔1 horsepower equals how many watts? - ✔✔746 watts
✔✔Circuit breaker definition: - ✔✔An automated device for stopping the flow of current
in an electrical installation as a safety measure
✔✔fuse definition: - ✔✔A safety device that provides overcurrent protection for a circuit
✔✔Plenum definition: - ✔✔A compartment or chamber to which one or more air ducts
are connected and that forms part of the air distribution system
✔✔Maximum voltage drop for a branch circuit is? - ✔✔3%
✔✔Maximum voltage drop for a feeder and branch circuit combined is? - ✔✔5%
✔✔Feeder Definition: - ✔✔All circuit conductors between the service equipment, the
source of a separately derived system, or other power supply source and the final
branch circuit overcurrent protection
, ✔✔Max amount of grouped disconnects? - ✔✔6
✔✔3 phase amps formula - ✔✔Watts / 1.732 x voltage
✔✔Receptacle wall space meaning - ✔✔Receptacle required in any wall space longer
than 2ft and any countertop longer than 12"
✔✔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