Hi,
just wondered what your thoughts are on this,
3 bed town house
Whole house ring final, mixture of 2.5 / 1.0 & 2.5 / 1.5 twin and earth cables,
End to ends = 0.78, 0.78, 1.6. R1r2 = 0.61 (spur).
ZS = 0.66!
BS7671 recommends a max of 100 square meters which using 2.5/1.5 = an r1r2 of...