NCCER Electrical Level 3 Module 8 Commercial
Electrical Services Questions with Correct
Answers | Rated A+
A building layout - CORRECT ANSWER - shows the location of the electric service and the
location of distribution and branch circuit panelboards within the structure -
A self contained meter installation CORRECT ANSWER refers to a single meter enclosure with a
single meter watt-hour or demand meter
Two basic types of current transformers ___ - CORRECT ANSWER -bussbar and donut type
what is a busway? - CORRECT ANSWER -
metal enclosure containing factory mounted bare or insulated conductors, which are usually
copper or aluminum bars, rods, or tubes
are used to provide a means of tapping the service entrance conductors or distrubition feeders
to supply the service disconnecting means - CORRECT ANSWER -bussways
a disconnect switch connected to the supply side of the meter (cold sequence) must be rated at
no more than ___ - CORRECT ANSWER -1000V
the most common service voltage for small loads is ___ - CORRECT 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 - CORRECT ANSWER -porcelain insulator attachments
Electrical Services Questions with Correct
Answers | Rated A+
A building layout - CORRECT ANSWER - shows the location of the electric service and the
location of distribution and branch circuit panelboards within the structure -
A self contained meter installation CORRECT ANSWER refers to a single meter enclosure with a
single meter watt-hour or demand meter
Two basic types of current transformers ___ - CORRECT ANSWER -bussbar and donut type
what is a busway? - CORRECT ANSWER -
metal enclosure containing factory mounted bare or insulated conductors, which are usually
copper or aluminum bars, rods, or tubes
are used to provide a means of tapping the service entrance conductors or distrubition feeders
to supply the service disconnecting means - CORRECT ANSWER -bussways
a disconnect switch connected to the supply side of the meter (cold sequence) must be rated at
no more than ___ - CORRECT ANSWER -1000V
the most common service voltage for small loads is ___ - CORRECT 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 - CORRECT ANSWER -porcelain insulator attachments
