Old berkeley cottage has 2wire feed to garage. adl rod at garage and no 8 green to first splice box, rest of wire is bx with alum strip, no egc back to main, as it is old k&T in attic.
Client was getting shocked when using potters wheel in rainy weather, found a short from hot switch backwire lead to edge of metal box, read 2.45 ohms during dry weather with load unplugged. cleared after i rebuilt the switch box,
my Question is it required for safety to in stall a egc back to panel that feeds garage, I believe that there is no ground at panel, so would I run gec from rod to rod at main, If there is one? to clear future faults? this place has also been alteredto fit new appliances etc moved switches etc without proper wiring protection at KO's. min. gfci circ. gar and afci main house?
