___ shows the location of the electric service and the location of distribution and branch circuit panelboards within the structure - Answer-a building layout
___ refers to a single meter enclosure with a single meter watt-hour or demand meter - Answer-a self contained meter installation
two ...
NCCER ELECTRICAL Level 3 Module 8 &
9 Commercial Electrical Services Exam
Questions and Answers
___ shows the location of the electric service and the location of distribution and branch
circuit panelboards within the structure - Answer-a building layout
___ refers to a single meter enclosure with a single meter watt-hour or demand meter -
Answer-a self contained meter installation
two basic types of current transformers ___ - Answer-bussbar and donut type
metal enclosure containing factory mounted bare or insulated conductors, which are
usually copper or aluminum bars, rods, or tubes - Answer-what is a busway?
are used to provide a means of tapping the service entrance conductors or distribution
feeders to supply the service disconnecting means - Answer-bussways
a disconnect switch connected to the supply side of the meter (cold sequence) must be
rated at no more than ___ - Answer-1000V
the most common service voltage for small loads is ___ - Answer-120/240V, single
phase, three wire service
are preferable and may be required by local utility. always check with local utility before
any installation - Answer-porcelain insulator attachments
porcelain insulator attachments___ - Answer-provide a separation between the Service
drop conductors and and other metal componets
the parallel service entrance conductors terminate in a ___ - Answer-main service
disconnect
NEC would not require a main service disconnect for an installation with fewer than ___
to disconnect power to the building and the ampacity - Answer-6 switches
it is important to follow the manufactures requirements for torque when terminating ___
- Answer-conductors using mechanical lugs
is typical for industrial plant installation - Answer-switchgear 480y/277v 3phase servive
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