Maine Low Voltage Practice case studies
Maine Low Voltage Practice · Put your knowledge to work in context.
The Maine Electricians' Examining Board, part of the Office of Professional and Occupational Regulation, regulates electricians to protect the public from hazards arising from the use of electricity. The Board issues licenses to those qualified to hold the title of Master electrician, Journeyman electrician, Limited electrician, Apprentice electrician, Journeyman-in-training electrician or Helper electrician, and it investigates complaints and issues permits. The Maine Low Voltage Practice case studies are 5 cases and about 2,217 words.
1Class 2 Cable in a Return-Air Plenum
A general contractor is renovating a 4,000 sq ft office suite in Portland. The cavity above the suspended ceiling is used as a return-air plenum.
546 words, about 3 min2Scope of a Maine Low Energy License
A Maine-licensed low energy electrician is sent to a restaurant to replace a failed 120V/24V transformer that powers the walk-in cooler thermostat and contactor. The transformer is mounted inside the air-handler cabinet and is fed from a 20A breaker.
437 words, about 2 min3Local Low-Voltage Permit and Historic Facade
A property manager in a Maine city wants to install a 24V internet-connected access-control system on the main entrance of a 100-year-old downtown building. The system includes an electric strike, a magnetic lock, a card reader, and a 24V power supply.
404 words, about 2 min4Contactor Chatter on a Long 24V Control Circuit
A 24V AC control circuit operates a contactor coil rated 20 VA. The transformer is a 40 VA Class 2 unit located in a mechanical room, and the contactor is 150 ft away.
427 words, about 2 min512V Landscape Lighting and Article 411
A homeowner hires a contractor to install a 12V landscape lighting system around a new patio. The transformer is a listed 300W, 120V primary/12V secondary unit plugged into an exterior GFCI receptacle.
403 words, about 2 min