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Using 63A mcbs is a bad idea as others have said you will not achieve selectivity. Any fault in a dwelling may well disconnect at the main board you need to insist on a Ryfield.
Discuss Load calculations on three phase board in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
If I change MCB to RCBO that will be ok ?Using 63A mcbs is a bad idea as others have said you will not achieve selectivity. Any fault in a dwelling may well disconnect at the main board you need to insist on a Ryfield.
That will make it worse. Do the circuits need additional rcd protection. Is there any design spec for the job it can't be an ad hoc design and from what you are saying it is outside your comfort zone.If I change MCB to RCBO that will be ok ?
That will make it worse. Do the circuits need additional rcd protection. Is there any design spec for the job it can't be an ad hoc design and from what you are saying it is outside your comfort zone.
That will make it worse. Do the circuits need additional rcd protection. Is there any design spec for the job it can't be an ad hoc design and from what you are saying it is outside your comfort zone.
Thank you for your help and suggestion , Monday or Tuesday I will see the landlord and will update it .That will make it worse. Do the circuits need additional rcd protection. Is there any design spec for the job it can't be an ad hoc design and from what you are saying it is outside your comfort zone.
Reply to Load calculations on three phase board in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
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