Calculating the R1 + R2 value when calculating the size of your CPC

[@MRMSB]

Nice video

[@ElectricalStudentsUK]

Thanks bud

[@Hadezul2]

Where do you get those book tabs?

[@ElectricalStudentsUK]

For the book tabs and loads of other formula sheets and guides, visit
www.electricalstudent.co.uk

[@FelixQuaicoe-op1me]

How do I get the book

[@ElectricalStudentsUK]

Hi there, from any electrical wholesaler in your area or from Amazon or a local book store. The On Site Guide usually costs around £30

[@teed1]

I still couldnt understand where that 6.16 came from while i was expecting 2.5

[@ElectricalStudentsUK]

If you do not know the size of the cpc, then you match it to the size of the line conductor. In this instance, the live was 6mm. Looking at table I1 OSG, the milli ohm per metre value of 6mm live and 6mm earth is 6.16. This value is used to find out R1+R2 which eventually leads to the adiabatic equation of calculating S, the minimum csa size of the cpc

[@teed1]

Thank you@@ElectricalStudentsUK