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Old 06-06-2011, 08:09 AM   #1
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Help with voltage meter

I measured for stray voltage and got two readings, I don't know which end goes in the water and which contacts metal.

When red is on metal and black in water, I get 3.401, when I do the reverse it is 0.080. Which is correct?

Thank you!
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Old 06-06-2011, 08:52 AM   #2
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Anyone measure this before?
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Old 06-06-2011, 09:29 AM   #3
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Well really it should not matter what lead goes where since your measuring for AC. One lead to ground in your outlet the other to your tank. I have not done this by the way and out of curiosity why are you measuring this?
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Old 06-06-2011, 09:32 AM   #4
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To see if there is stray voltage in the tank.
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Old 06-06-2011, 09:41 AM   #5
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yea but i mean do you suspect stray voltages in your tank... just wondering if you notice any side affects due to stray voltages
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Old 06-06-2011, 09:46 AM   #6
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Oh, no, but I want to test it as part of a routine, with powerheads, heater, pump in the water. I do have a tang that had some spots yesterday and none this am but still some discoloration on her fins.
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Old 06-06-2011, 09:54 AM   #7
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Hey, if you have the tester it's worth a shot to be sure.

I've got my fingers crossed for the tang. We don't want the dreaded "I" word coming out.
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Old 06-06-2011, 10:03 AM   #8
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Oh I see.. But yea when measuring AC voltage lead polarity doesnt matter.
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Old 06-06-2011, 10:21 AM   #9
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Quote:
Originally Posted by Jereli
Oh I see.. But yea when measuring AC voltage lead polarity doesnt matter.
Did I get two measurements because I didn't put it in the outlet but rather just touched metal with it? I will put it in the ground on the outlet when I get home.

I am getting her better food today so hopefully the spots will not return. Crazy though, it has to be in the tank already for her to get spots, and she is the only new fish!
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Old 06-06-2011, 10:35 AM   #10
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yea could have just been poor grounding which was not giving you a good reading.. it should be grounded to your home ground on the outlet
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