about grounds

[George Handley]

Good afternoon, Sir,

Thank you for detailing your additional electrical background. It makes me so "warm & fuzzy" to know that I'm in "experienced" company. My good electrician buddy has lamented to me about the same grounding subjects and quandaries he experienced during his carreer, and his non understanding about what different highly qualified engineers have told him to do over the years which confounds him, too, as being totally against common sense.

I've taken four years of his razing about X10 etc., and I can't wait till he gets back in town to tell him what KCP&L found and fixed. 

BTW, I've had the dining room chandler on all day which is in line of site of my office where I'm writing. I've had stone masons here all day using big 120vac equipment, and I also have the AC on. Granted, several hours doesn't prove anything, but for the record, there have been no blinks of the lights today… so far!  Hurray!

I'll keep everyone posted as time goes on, and again thanks for your encouraging support and wisdom on this grounding subject.

George
 


On Oct 11, 2013, at 3:04 PM, Warren Whiteside <warrenwhiteside at verizon.net> wrote:

> George, experienced or not, I see unclearly about grounds myself. After years of working under data center floors it always intrigued me how each electrical engineer had his own view of grounding. How much and where,etc: seems like they all had different ideas as to the degree needed. You may note that the power company has grounding tied at their drop down transformer secondary center tap. In older panels the electrical inspectors would turn a service down that didn't have the neutral bar bonded to ground. This separation in newer panels seems in the main due to the advent of GFI breakers/circuits. The point of reference to ground must be the governing factor. My panel has a bonded ground so I use GFI receptacles (in the kitchen) although I do have a single GFI breaker for the bathroom outlets. My house was built in 1976 and the NEC code has changed a good bit since then. <g> Oh,btw, I was taught as an apprentice that the NEC code was a "minimum" of what was acceptable. There are portions that are exceeded (including grounding).
> As to the increase in voltage from transformer to service entrance: I think we both agree that it is not normal.
> Although I have a had a mix of electrical experience most of my work was industrial and light industrial. I had residential and jobbing in my early years and ran a jobbing/trouble truck for a local contractor. I've also had some experience directing the activities of other electricians as a foreman/general foreman. Despite all this I still never had a clear and uniform picture of why some grounds were needed while others might not. So don't feel lost in this discussion. You have experienced company<G>.
> 
> Warren
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