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Posted by Tom The Great on August 28, 2006, 4:12 pm
On Wed, 23 Aug 2006 22:11:57 -0400, "RBM" <rbm2(remove
this)@optonline.net> wrote:
>You need to speak to the authority having jurisdiction in your area. In NY
>we would run a number 4 attached to the water pipe on the street side of the
>water meter with a jumper to the house side of the meter, then a separate
>number 4 to two ground rods driven six feet apart. Both conductors terminate
>at the neutral ground buss
>
Although the ground rod conductor (the supplemental electrode), only
has to be 6AWG, per 2005 NEC 250.53-E, using 4AWG means less
restrictions to installation, due to possible physical damage.
Good idea.
later,
tom @ www.FindMeShelter.com
>
>> I'm upgrading the electrical service in my Minneapolis home from 60 amp
>> to 200 amp. The service entrance, from weatherhead to the main panel,
>> is installed. The next step is grounding the system. The 2005 NEC is
>> unavailable in my library and I can't find a Minnesota Code resource
>> and I want to know what is required for this step. All of the books
>> I'm referencing (including Wiring Simplified and Rex Cauldwell's Wiring
>> a House) seem to have variations.
>>
>> I think I'm supposed to ground from the neutral bus bar to a water pipe
>> within 5 feet of where it enters the house, and supplement it with a
>> grounding rod. This would entail running 6 AWG copper from the main
>> panel approximately 30 feet to a point near the water meter, then
>> bonding to a grounding rod that's already in place a few feet away in a
>> sump pit.
>>
>> I would appreciate any advice on code requirements for this matter.
>>
>> Thank you,
>> Alan
>>
>
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