Brandon Loyd
Senior Member
In regards to the amps flowing through the grounding electrode of a transformer, is there an acceptable amount of amperage allowed back to earth? Or is 16 amps on a 100 KVA transformer perfectly normal and acceptable?
...then you could have a current of 16 amps flowing through the dirt, back to the grounding electrode, up the grounding electrode conductor, and thereby back to the source.
Hurk,
Let me make sure I have it straight...
1. The primary neutral failed
2. Because it is a grounded wye system, the neutral current traveled into the dirt by the utility ground rod and back to the neutral somewhere else and/or back to the source
3. The utility connects together the primary neutral, secondary neutral, and utility grounds which is why the primary neutral was also going thru the house gec system, to dirt, then source.
4. If both the utility and customer GES failed completely, the premise GES and everything connected to it would have risen to a potential of 7200 volts very likely causing flash over and fire or electrocution
Right?
Does this make a good case for not connecting together the primary and secondary neutrals?