Gregg Harris
Saw Horse
- Joined
- Jan 17, 2012
- Messages
- 934
I am still not 100% sure of what your argument is, nor do I think you completely grasp the concept of the original post. As far as a "formal course in electronics where you learn about imaginary numbers." I find that to be a bit of an arrogant statement. I for one am formally trained in electronics, electrical and electronic theory, but others may not be. Regardless of my training and comprehension of the subject matter it is not necessary for the understanding of the concept of grounding and bonding.
When you discuss your "ground currents," are you talking about voltage gradients due to objectionable current? If so, that is why we have a low-impedance ground fault current path that we need back to the soil in order to eventually reach back to the transformer from the utility company.
Concerning bonding of structural framing members, this has been required for decades for obvious safety reasons when it comes to ground fault and short circuit protection. Might I suggest that you spend some time reading all of article 250 of the NEC and get some formal training yourself on this matter. Every set of MEP plans that I received from a licensed engineer or engineering firm seem to grasp and understand this concept as they always specify the grounding and bonding of the service equipment and metal structure. It might be a good idea if you submit a proposal to the NFPA to eliminate bonding of building steel.
OUCH!