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DanBrown

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Could anyone just confirm my results for adiquate earthing size and calculation using the adiabatic equation...

My test was on a ring main circuit wired in 2.5/1.5 pvc..
My supply voltage is 247v
My Impedance is 0.38 ohms.
The circuit is supplied via a RCBO 32a C type

My results suggest that a min CSA earth is 1.78mm2 and my cable CPC is only 1.5mm2.

Could someone just do a quick confimation of my answer please...
Is it a problem as such or not?? (still learning testing)
 
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