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Discuss Heat pump diversity calculation question in the Electrical Wiring, Theories and Regulations area at

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  1. Lc1

    Lc1 Regular EF Member

    When calculating diversity. Does external air conditioning equipment such as heat pumps fall under heating and power in the osg such that you take 100% of the highest then 75% of the remainder?

  2. Wilko

    Wilko Electrician's Arms

    Business Name:
    Wilko Electrics
    Hi - just my thoughts, but perhaps keep in mind their use on site. If it's office work space then possibly each morning they will be timeswitched and run flat out till temperature target achieved. This may be why thermostatic heating loads have no diversity allowance (6 and 7 in Table A2 of OSG), just saying.
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