MA Electrician case studies
MA Electrician · Put your knowledge to work in context.
An electrician license in Massachusetts is issued by the Board of State Examiners of Electricians, which credentials both journeyman and master electricians. The journeyman license is the working-level credential: it requires documented hours of supervised field experience plus a passing exam score. The MA Electrician case studies are 5 cases and about 4,261 words.
1Adding a 48 A EVSE to a 100 A Dwelling Service
A 1,800 sq ft single-family dwelling is served by a 120/240 V, single-phase, 100 A service. The cooking range is 12 kW electric, the clothes dryer is 5 kW electric, and space heating and water heating are gas.
833 words, about 4 min2Detached Garage Feeder: Neutral, Ground, and Electrode Decisions
A 200 A service supplies a dwelling. A detached garage 60 ft away is fed from the house by a 100 A feeder consisting of three #3 Cu THWN conductors plus a #8 Cu equipment grounding conductor, installed in Schedule 80 PVC.
821 words, about 4 min315 hp Motor: Three Different Amps for One Circuit
A 15 hp, 230 V, three-phase, design B motor with a nameplate FLA of 34 A and a marked service factor of 1.15 drives a conveyor. It is supplied from a 100 A molded-case circuit breaker in a panel 80 ft away, with copper THHN conductors in EMT, terminations rated 75°C, and a combination starter with thermal overloads and a non-fused disconnect at the motor.
934 words, about 5 min4Packing a Box and Bundling Cables in a Kitchen Remodel
During a kitchen remodel, an electrician must install a receptacle in an existing 4 in. metal box, which has a volume of 30.3 cu in.
775 words, about 4 min5The Hot Lug on an Energized MCC Bucket
At a 480Y/277 V commercial building, an electrician is told to "just tighten" the line-side lug of a 100 A MCC bucket feeding a rooftop air handler. An infrared scan shows that lug at 165°C while the other two phases read 45°C.
898 words, about 4 min