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electrical diversity in commercail buildings

Discuss electrical diversity in commercail buildings in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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EF Member
hi guys

just a quick question

what diversity rules do you normally put to a commercial building, it will have offices with IT equipment, laundry room, kitchen etc



don't worry sorted it now, did not have my OSG or regs to hand but do now! :blush5:
The diversity factors found in these 2 publications won't give you anywhere near a realistic result. They are only rough guides. Same with the maximum demand factors...

Realistic results only really come from experience, be it for domestic, commercial or industrial installations...


Electrician's Arms
I would not use the OSG for this to be honest, especially as it is commercial.

I would add the protection devices up and use the factor *0.6 and get my figure from that.

I've attached a DNO guide they use. Personally for me they seem to go inverse commercial 0.8 and industrial 0.5, I would go the other way, as I found that industrial would be working to a fuller capacity

View attachment Guidelines_network_design.pdf
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