Essential Concepts from the National Electrical Code – Unit 2 Test Explained

ILLUSTRATED GUIDE TO THE NATIONAL ELECTRICAL UNIT 2 TEST


Wiring components are not permanently closed in
considered accessible if by the structure or finish of
(1) access can be gained the building
without damaging the
structure or finish of
the building or if (2) they
are .
located adjacent to the
equipment where access
Overcurrent devices do is achieved by the use of
not have to be readily ac- portable means
cessible if .



Ready accessibility to not required
wiring in luminaires is
.
conductors of the attached
An attachment plug estab- flexible cord and the con-
lishes connection between ductors permanently con-
. nected to the receptacle




, ILLUSTRATED GUIDE TO THE NATIONAL ELECTRICAL UNIT 2 TEST

When metal parts are re-
quired to be electrically main bonding jumper
connected, a(n) is in-
stalled, thereby guarantee-
ing the required
electrical conductivity.
arc-fault circuit interruptor
A(n) is a device in- (AFCI)
tended to provide protec-
tion from the effects of arc
faults by recognizing char-
acteristics

An appliance branch cir-
cuit supplies energy to one connecting appliance(s)
or more outlets for the pur-
pose of .
different phases
A multiwire circuit must
consist of conductors con-
nected to .

the same panelboard or
similar distribution equip-
ment