QUESTIONS AND ANSWERS GRADED A+
✔✔Wall switches shall be located at least _____ , measured horizontally, From the
inside walls of a spa or a hot tub - ✔✔5ft
✔✔The general rule requires grounding type receptacles to be installed on _____ A and
______ A circuits. - ✔✔15, 20
✔✔Ohms law is stated as ? - ✔✔E divided I =R
✔✔All 15 and 20 amp, single phase 125 volt receptacles located within _____ft of the
inside wall of a pool shall be protected by a ground fault circuit interrupter. - ✔✔20
✔✔How many No. 10 THWN conductors can be pulled into a 1 in. EMT conduit? -
✔✔16
✔✔When installing NM and armored cable through wood structural members, holes
shall be bored. - ✔✔Not less than 1 1/4" from the face of the stud
✔✔The chief objective of the NEC is to? - ✔✔Promote safety in electrical installations
by specifying minimum standards
✔✔According to code, how many #14 TW conductors can be used in a run of 1in. EMT
conduit? - ✔✔25
✔✔Overhead service drop conductors shall not be smaller than #_______ awg copper
wire - ✔✔8
✔✔30 amps at 220 volts produces ______ kilowatts - ✔✔6.6
✔✔NEC article _______ contains the requirements for ground fault protection for
personnel for all temporary wiring installations used by personnel during construction,
remodeling, maintenance, repair, or demolition of buildings, structures, equipment or
similar activities - ✔✔Article 590.6
✔✔Conductors _______ and larger must be stranded. - ✔✔8
✔✔Portable appliance exceeding ______ amps may not be used on an ordinary 20
amp circuit commonly used in house wiring? - ✔✔16
✔✔3/8' greenfield cannot be installed in lengths exceeding ______feet. - ✔✔6
, ✔✔A ground clamp installed on a copper pipe should be made of or coated with _____.
- ✔✔Copper
✔✔Laundry branch circuits shall be on a _____ branch circuit - ✔✔20 amp
✔✔In dealing with motors and related equipment when the code specifies "in sight from"
it means ? - ✔✔The equipment must be visible, must not be more than 50ft
✔✔To select transformer overcurrent devices from table 450.3, the percent _____ of the
transformer must be known. - ✔✔Impedance
✔✔Fuse protection for transformers rated 1000 volts or less is selected using _____. -
✔✔Table 450.3(B)
✔✔Section 450.3(B) states that if a transformers secondary winding is protected with an
overcurrent device rated not more than 125% of the rated secondary current, then
primary winding need not have a separate overcurrent protection if 5he circuit it is
connected to is protected by an overcurrent device rated not more than ______% of the
primary current. - ✔✔250
✔✔A three phase ,four wire, wye connected system is normally _______grounded. -
✔✔Center
✔✔Sectiom 240.22 states that overcurrent devices shall only be installed in ______
comductors. - ✔✔Ungrounded conductors
✔✔Transformers and low-voltage wiring for doorbells are classified as ______ circuits
under Article 725 - ✔✔Class 2
✔✔Formula for determining the full load current of a single phase transformer when the
voltage and transformer power rating are known. - ✔✔I= kVA/E
✔✔Having to come out of a box with 3/4 liquid tight nonmetallic type LFNC-A conduit,
what is the maximum No. of type Z conductors size 10 awg allowed? - ✔✔11
✔✔According to the NEC what is the maximum % fill of a conduit you are allowed with
one conductor? - ✔✔53%
✔✔Given the type THHW compact conductors size 1/0 awg, what is the minimum size
type EB, PVC, conduit that can be used for 64 of them? - ✔✔6"