Drawing attached showing setup. enter image description here

  • 1
    What's the reasoning behind having that intermediate disconnect? I take it the service disconnnecting means is on a pole or meter-board? Sep 20 '19 at 4:03
  • 2
    If you run a backhoe through that 112ft cable, and shorts it all together, will it melt the meter... Or will it trip a breaker in the left box? Does anything other than a breaker exist at that pedestal main? Sep 20 '19 at 5:14
  • Are you in the US? Sep 20 '19 at 12:24
  • First box is a 200 amp mobile home service per permit. 2nd box is also a 200 amp main used as a junction box to connect the two runs of wire. 3rd box is the mobile home 200 amp main in the home. Yes, shorted line between first 2 boxes would trip the main. Sep 20 '19 at 15:46

At minimum you need a rod (or more usually 2, more than 8 feet part, since that gets you out of measuring the resistance cheaper than doing the measurement) at the entrance and the same at the mobile home. Given it's not a huge expense, buy 6 and sink a pair at the pedestal as well to be sure. No points off for doing more than the minimum.

I have 5 or 6 and a 100 foot well casing on a single service entrance, personally.

  • From what I have read, the more ground rods used away from First disconnect increased the problems from lightening if I have understood right. The first first grounding rod is code here. I am confused. Appreciate the comments and help. Sep 20 '19 at 15:52
  • If you are under NEC rules: diy.stackexchange.com/questions/132502/…
    – Ecnerwal
    Sep 20 '19 at 16:50
  • Hey thanks, that explains it all and I only have one ground rod to move from pedestal to mobile home(out building) Thanks to everyone that replied. Sep 20 '19 at 19:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.