Electrical Grounding, AIN’T NO JOKE...

Heard a funny story. JBLM (military base in WA) was preparing for a high altitude nuclear strike. EMP. You know, the one they say will take out electronics. Well some engineers made a great plan with a field of deep driven rods, GEM on top and a concrete case. In the end, the ohms were way to high. They forgot to consider location and drove the rods into a glacial field of loose river rock. Millions spent. Had to redo in another lication.
 
Was also told many peopke die every year because a plumber will run a pex feed to the house. The main and probably only ground on the water pipe is now gone. Yet, the bond to the existing copper remains. Any unbalanced voltage in the electrical system is now running through the copper plumbing. When somebody steps into the tub and puts their foot on the drain they get electrocuted and die. Fun stuff grounding is.
 
Just musing now but in the last scenario, imagine sitting in the tub and a lightning strike hits your electrical lines and that voltage travels through the copper in your plumbing and into your tub where you happen to be taking a bath. If there's no Earth to go to it's looking for any place to be.
 
Kingrex said:
Just musing now but in the last scenario, imagine sitting in the tub and a lightning strike hits your electrical lines and that voltage travels through the copper in your plumbing and into your tub where you happen to be taking a bath. If there's no Earth to go to it's looking for any place to be.
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It will find it with the contract of your body to the rub. Say bye bye, actually you will never know it unless you happen to survive. That's why I leave all of my electrical to a licensed & bonded professional.
 
I tested my concrete encased electrode today. I turned all the circuit breakers off in my house today accept for one. I unplugged all my computers and audio electronics. I disconnected all bonding and grounding wires connected to my grounding electrode. I then took a 12 gauge wire, stuck it in a receptacle then touch the other end to my grounding electrode. The ampacity flowing through that wire was 17.2 amps. That means my resistance is 7 ohms. That's pretty darn good.
 
Kingrex said:
I tested my concrete encased electrode today. I turned all the circuit breakers off in my house today accept for one. I unplugged all my computers and audio electronics. I disconnected all bonding and grounding wires connected to my grounding electrode. I then took a 12 gauge wire, stuck it in a receptacle then touch the other end to my grounding electrode. The ampacity flowing through that wire was 17.2 amps. That means my resistance is 7 ohms. That's pretty darn good.
Click to expand...

Hardcore Audio Addict!


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