Practice Quiz

Red Seal Construction Electrician

Category - Construction Electrician

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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.
Explanation
Answer: A.  Explanation: CEC 2021 8-106 3)  States that where interlocks are installed to prevent simultaneous operation of electric space-heating and air conditioning loads, whichever is the greater load shall be used in calculating the demand.
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