hi all, just trying to get into some electrics, basics, been working as a free helper to get used to some for a friend of mine but im struggling to get my head around the R1+R2 TEST.
ok i have tested my own house
r1 = 0.63 so divide by 4 = 0.15
rn = 0.60 so divide by 4 = 0.15
r2 = 0.92...