Upgrading to 200 Amp Service....basic questions.

daveswoodhauler Posted By daveswoodhauler, Nov 11, 2011 at 4:21 PM

  1. mayhem

    mayhem
    Minister of Fire 2.
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    May 8, 2007
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    Loc:
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    Not sure if its a concern or not, but make sure your grounding is good for 200 amps too. When I built my house I hired a local electrician based on multiple recommendations from people whose opinion I trused. House was to be wored for 200A, dud put in a 100A rated ground and a tiny little breaker panel...among other screwups and lack of returning my calls this is why I replaced him with another electrician.

    We were glad we caught the bad ground before we poured the basement floor over it.
     
  2. mainemaul

    mainemaul
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    Jul 22, 2008
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    are you serious?
     
  3. jharkin

    jharkin
    Minister of Fire 2.
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    Oct 21, 2009
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    The inspection didn't catch it? Our old 100amp was just grounded to the metal water main. For the new service they retained that, and added a supplemental ground rod outside (code minimum I beleive is 2 8ft ground rods OR 1 ground rod + water main).
     
  4. mayhem

    mayhem
    Minister of Fire 2.
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    May 8, 2007
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    Loc:
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    We found and fixed it pre-inspection.
     
  5. burnham

    burnham
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    Oct 19, 2007
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    central massachusetts
    2 ground rods even with the copper water main. the logic is you may change to a plastic service sometime down the road.
     
  6. seige101

    seige101
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    Mar 25, 2008
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    Loc:
    Western MA
    Copper water main and 1 ground rod if you can prove 25 ohms to ground or less. Most electricians will not spend the several grand for the tester and we just drive 2 rods and don't have to prove the resistance. The extra 6' of copper, ground rod, acorn clamp and labor to install it is probably right around 20 bucks.
     
  7. jharkin

    jharkin
    Minister of Fire 2.
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    Oct 21, 2009
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    Maybe our code inspector is lazy? Only one rod + the main and it wasn't questioned.... hmm
     

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