*Shallow end, being shocked when grabbing railing*

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These voltages bug me a bit. Is that really 22VAC? How was this taken?
This sounds as if it's a coax that is not hooked up on either end? How was this taken? 2.2VAC
How was this taken? 5.9VAC
How was this taken? 4.2 VAC

What I am asking is what were the leads hooked up to to get the voltage reading?
A coax has two possible points of connection. One being the outer threaded connector and two the center copper wire.

If you could take pictures with the leads attached to the points the measurements were taken please?

Unplugged from house coax: 22VAC
Unplugged from the house and FiOS router: 2.2VAC (How the heck does that happen?)
Unplugged without power: 843mVAC
Connected back to coax back into the house: 5.9VAC
All coax reconnected: 4.2VAC
-30 through -50mVDC
 
NowintersinAZ said:
The third harmonic still bugs me. Is there a large business near by that may use a bunch of computers or electronic equipment?
Click to expand...
This has really intrigued me from the moment it was mentioned. According to what we know so far, we have an outside power influence. The neighbor, while always possible, is the least likely. All utilities are in the front so none of them cross the general pool area, but will still be the most likely entry path (in theory compared to other theory’s).

Open that old Verzion interface and prove its not screwed in. Open and bonds at the cable sheath and ground wires as well. Check the pool for voltage and we’ve officially proved / disproved the most likely foreign voltage culprits.

At that point we need to be thinking freaky. How is voltage getting onsite if it’s not through something from the general area of the source of all power. Unless……. The power source is the problem and it’s been staring us in the face the whole time. How we explain *this* one is that when the neighborhood is cut, so is the 3 phase property that OP may or may not know is 2 blocks away.

Rule out the copper phones gamerfan. Then we can go back to the power co and neighbors. But hey !!! We have a few things off the list and progress, right ????
 
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NowintersinAZ said:
These voltages bug me a bit. Is that really 22VAC? How was this taken?
This sounds as if it's a coax that is not hooked up on either end? How was this taken? 2.2VAC
How was this taken? 5.9VAC
How was this taken? 4.2 VAC

What I am asking is what were the leads hooked up to to get the voltage reading?
A coax has two possible points of connection. One being the outer threaded connector and two the center copper wire.

If you could take pictures with the leads attached to the points the measurements were taken please?

Unplugged from house coax: 22VAC
Unplugged from the house and FiOS router: 2.2VAC (How the heck does that happen?)
Unplugged without power: 843mVAC
Connected back to coax back into the house: 5.9VAC
All coax reconnected: 4.2VAC
-30 through -50mVDC
Click to expand...
All of these were taken with the common lead from the screwdriver with the wire attached, and the input lead on the coax grounding block.
outside coax.jpg

The measurement that shocked me the most was when neither end of the coax cables was connected, nor was the ground lead (as you see attached in the picture). Yet, I picked up 2.2VAC.

Also, I just chatted with my neighbor. He checked the voltage from his pool decking to the water and measured .5VAC.
 
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gamerfan2004 said:
The measurement that shocked me the most was when neither end of the coax cables was connected, nor was the ground lead (as you see attached in the picture). Yet, I picked up 2.2VAC.
Click to expand...
So the grounding block has no wires attached and you still read a voltage differential? Did you try next to the block on the siding?

The screwdriver in the ground, how close was it to house ground rod?
 
gamerfan2004 said:
All of these were taken with the common lead from the screwdriver with the wire attached, and the input lead on the coax grounding block.
View attachment 360512

The measurement that shocked me the most was when neither end of the coax cables was connected, nor was the ground lead (as you see attached in the picture). Yet, I picked up 2.2VAC.

Also, I just chatted with my neighbor. He checked the voltage from his pool decking to the water and measured .5VAC.
Click to expand...
If you would remove both coaxes and the green bond and measure at the pool for the annoying voltage please and thank you?
 
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JamesW said:
Was the 22 volts accurate or a typo with a missing period?
Click to expand...
Nope, not a typo. I thought it was a lot as well. Granted, I don't know the required voltage needed for 4k signals to their boxes. We aren't using MoCA anymore and are strictly using UTP from the router for the internet.
mas985 said:
So the grounding block has no wires attached and you still read a voltage differential? Did you try next to the block on the siding?

The screwdriver in the ground, how close was it to house ground rod?
Click to expand...
Yes, still had voltage with no wires attached. I did not try the next block on the siding. The screwdriver was inserted about 8 to 10 feet away from the house ground rod.
JamesW said:
Any chance that either of these two screws accidentally made contact with something in the wall?
Click to expand...
That connection has been there for years. I'll need to unscrew it from the siding to verify.
 

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I would connect the oscilloscope between the rail and the water and then begin disconnecting everything one by one until the oscilloscope shows a definite change.

Have someone watch the scope as something is connected or disconnected.
 
You work IT right?
Do you fix computers?
troubleshoot networks?
It's the exact same thing!
A process of elimination. Troubleshooting skils are all the same no matter what you're troubleshooting. You may think oh! it's over here only to find it is not. Now you have one less place to look. Go to the next place if it's not there move on and now you know two places it is not.

Take notes record voltages at the pool and at the place you are testing. See a pattern? work on it. Running out of ideas walk around looking over every little detail of the pool and anything electric. When done do it again you may have missed something been thinking of another project and missed it.

Troubleshooting is not always and most times not easy and takes patience and perseverance.
 
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NowintersinAZ said:
oh and you have not done the biggy in my book and that is lift the neutral.
Click to expand...
Based on this picture, it looks like isolating the neutral would be difficult because it is bare aluminum and it is making contact everywhere.

They will probably need to have an electrician do it as it is dangerous and difficult to fully isolate it from the system.

main braker panel.jpg
 
JamesW said:
In any case, it is very bad practice.
Click to expand...
1980s man……. 1980s. The electricians were drunk. So were the inspectors. The cops pulled them BOTH over in their way home but the cops were DRUNKER and couldn’t tell.

So yeah. White wires were used as the 2nd leg sometimes.
 
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Maybe one of the gfci breakers is bad and leaking voltage onto the neutral?

Maybe have the electrician remove the breakers while you watch for a change on the scope.

Also, make sure that there are no power wires touching the neutral/ground bar.
 

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