Maine Contractors License Exams

Maine Limited Electrician

Sample Questions for the Maine Limited Electricians Exam

  1. In existing branch-circuit installations, if the grounded conductor of the dryer circuit is used to ground the frame of an electric clothes dryer, all of the following conditions must be met EXCEPT:
    1. The grounded conductor is not smaller than size 10 AWG copper or size 8 AWG aluminum.
    2. The grounding contacts of the receptacle installed with the dryer are bonded to the dryer.
    3. The supply circuit is a 120/240V, 1Ø, 3-wire circuit derived from a 3 Ø, 4-wire delta system.
    4. The grounded conductor is insulated, or if uninsulated and part of a Type SE service-entrance cable, and the branch circuit originates at the service equipment.
  2. A 15 or 20 ampere, 124 volt receptacle used for the reduction of electrical noise where the grounding terminal is isolated from the receptacle mounting yoke is required to be identified by:
    1. a green grounding symbol
    2. the words "isolated ground"
    3. being completely orange in color
    4. having an orange triangle on the face of the receptacle.
  3. An electrical conductor is made up of 19 strands each with a diameter of 0.0837 inches. The approximate circular mil area of the conductor is:
    1. 211,600 circular mils
    2. 133,100 circular mils
    3. 184,200 circular mils
    4. 105,600 circular mils
  4. Wiring which is installed to meet minimum requirements of the National Electrical Code is:
    1. adequate to meet future needs
    2. adequate for present needs
    3. always the most efficient wiring
    4. for all practical purposes safe & free from hazard
  5. A circuit leading to a gasoline-dispensing pump must have disconnecting means:
    1. Only in the grounded conductor
    2. Only in the ungrounded conductors
    3. Operating independently on all conductors
    4. Operating simultaneously on all conductors
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