Posted by buickanddeere on January 07, 2013 at 16:23:36 from (216.183.134.197):
In Reply to: OT 110 from 220 posted by Heyseed on January 07, 2013 at 10:32:00:
The grounding system is usually bare wire connected to ground rods and is not supposed to carry neutral current. Get it? If you don't you have no clue, that simple.
If the ground system does carry current then live stock can recieve tingle voltage shocks. A common phantom problem that has bankrupted farmers due to livestock stress.
The insulated neutral conductor with the one exception of when it is strung bare overhead in a triplex . Is a current carrying conductor which held to near earth potentional . In the bad old days by a ground to neutral bond at each panel.
However since this ground to neutral bond raised the ground system voltage up to neutral system voltage. And caused problems with livestock, electronics and other equipment.
The trend is now different but slow to adopt because " we always done it this way and it worked and was good enough" stubborn mentality. Is to bond the neutral only at the central transformer pole if the power is run to several separate panels in different buildings. Or only at the first distribution panel and float the neutral downstream in the sub panels via tingle voltage filters.
The utilities in the past before they knew better,to save money and limit lighting pulses. They tied the overhead neutral to ground every few power poles.
The utilities now wish the high voltage neutral had never been grounded as such. Because now if the utility high voltage neutral and the secondary side neutral of the utility transformer is bonded. The elevated utility neutral voltage raises the customer's neutral and ground system voltage.
Why, because all conductors have resistance and voltage drop. Also because sometime ground rods make a high resistance connection to earth.
I find all sorts of "electricians" that don't know the neutral-ground difference. Just how exactly does Bubba think he is right and a long list of engineers, utility inspectors and utility workers are wrong?
Rare do I recall of anybody being glad about being wrong. I don't expect you to like the ground and neutral is different message either. Just because you don't like the truth from somebody young enough to be your kid is another matter.And does not affect the laws of physics.
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