Practice Quiz

Red Seal Construction Electrician - Question List

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21.
What is the minimum required length of the consumer’s service conductors beyond the service head of an overhead service including drip loops?
  1. 400mm
  2. 550mm
  3. 600mm
  4. 750mm
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22.
Which of the following conditions does not exempt the use of a service head for a consumer’s overhead service conductors?
  1. The service cables are run continuously from the utility connection to the consumer’s service equipment.
  2. The service cable terminates in an approved and weather rated box.
  3. The cable is sealed from the weather, the conductors are bent downwards, and the cable is securely held in place by a clamp or other means.
  4. Each conductor of a multi-conductor cable enters the building through a separate sealed wall penetration.
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23.
The consumer’s service conductors to a small service on a farm outbuilding have been ran using AC90 #10 AWG aluminum cable, with 1m of wire left beyond the service head. The service is feeding two 15 A circuits with a termination temperature of 75 degrees C. What part of the installation is not code compliant?
  1. Too much wire has been left beyond the service head.
  2. Aluminum conductors cannot be used as service conductors.
  3. AC90 is not approved for service conductors.
  4. The wire size of the cable is too small.
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24.
What is the maximum permissible amperage of a consumer’s service if the meter loop is to be installed on the supply side of the service without a bypass?
  1. 100 A
  2. 200 A
  3. 250 A
  4. 320 A
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25.
When calculating the demand for heating and cooling loads in a single dwelling, which of the following is true?
  1. The greater of the sum of heating loads or cooling loads can be used if mechanical interlocking is used.
  2. The sum of all heating and cooling loads must be used, even if mechanical interlocking is used.
  3. The greater of the sum of heating loads or cooling loads can be used in any circumstance.
  4. The lesser of the sum of heating loads or cooling loads can be used if mechanical interlocking is used.
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