Hi there, this is a question I originally posted in the trainee sub forum which has been a little quiet of late. I know more traffic flows through here, so I'd be grateful for any corrections.
In specific relation to the standard arrangements of final circuits in accordance with Appendix H in the green OSG, am I correct in interpreting that the application of diversity does not inform the nominal rating of the selected protected device, In.
Pulling a sentence from Appendix A -
'The current demand for any final circuit which is a standard circuit arrangement complying with Appendix H is the rated current of the overcurrent protective device of that circuit'.
So In is fixed as in Table H2.1, either 32A or 30A for an A1 or A2, and 20A for an A3, but the application of diversity informs the demand of the entire installation, cumulatively, and the selection of the main service head fuse/s? Is that about the sum of it?
It would make sense to me that these circuits assumed such an allowance, given the uncertainly as to what may be connected to it...
In specific relation to the standard arrangements of final circuits in accordance with Appendix H in the green OSG, am I correct in interpreting that the application of diversity does not inform the nominal rating of the selected protected device, In.
Pulling a sentence from Appendix A -
'The current demand for any final circuit which is a standard circuit arrangement complying with Appendix H is the rated current of the overcurrent protective device of that circuit'.
So In is fixed as in Table H2.1, either 32A or 30A for an A1 or A2, and 20A for an A3, but the application of diversity informs the demand of the entire installation, cumulatively, and the selection of the main service head fuse/s? Is that about the sum of it?
It would make sense to me that these circuits assumed such an allowance, given the uncertainly as to what may be connected to it...
