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Cable Calculations - Diversity Applied

Good morning everyone.

This is a theoritical question that I have however come across....really a lot when inserting my loads in Amtech!!!!!

I have a DB which feeds lighting and small power in a reception area in a hotel.

The DB has various lighting circuits and various small power circuits (sockets, door access controllers, heaters, automatic doors etc etc etc)

As I understand there is one type of diversity that is common sense and is the "concurrency factor" which is applied to the DB as a whole.

I am more interested however in additional diversities for the individual circuits.

My question is this.

I have a room where the lights are all on or all off through presence detection. I anticipate that within a typical day the lights will be on 6 hours. That is 25% of the day. Does this mean that I sould insert for this specific circuit an individual diversity factor of 0.25?

Do I interpret this correctly?
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  • Former Community Member
    0 Former Community Member
    You have already assessed that the lights may be on for 6 hours through the course of a 24 hour period, which isn't excessive, so I would follow table A2 which allots a 75% allowance for small hotels etc.
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  • Former Community Member
    0 Former Community Member
    You have already assessed that the lights may be on for 6 hours through the course of a 24 hour period, which isn't excessive, so I would follow table A2 which allots a 75% allowance for small hotels etc.
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