NCCER Electrical Level 3 Module 8 Commercial Electrical Services Questions with 100% Verified Solutions

NCCER Electrical Level 3 Module 8 Commercial Electrical Services Questions with 100% Verified Solutions it is important to follow the manufactures requirements for torque when terminating ___ - ANSWER -conductors using mechanical lugs is typical for for industrial plant installation - ANSWER -switchgear 480y/277v 3phase servive this service complies with nec which requires that - ANSWER -occupants can access to their own service disconnect means this allows tenant meters and service disconnecting means to be placed inside the building - ANSWER -under the conditions listed in NEC230.72c - ANSWER – ___ 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 distrubition 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