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R1+R2 on 2 core Hi Tuff

Former Community Member
Former Community Member
Hi all,


At a property yesterday that has a garage submain being fed from the main house CU in 2.5mm 2 core Hi Tuff fed in conduit underground. The main installation is TNCS and the garage CU is TT from a stake just outside the door. When reporting test results on the main CU, how would you record an R1+R2 value?


Very rarely do I come across TT so any help is, well, helpful!
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