Electric shocks

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I have recently been feeling slight electric shocks when I put my hand in the water. I'm struggling to use a multimeter but I have a gadget where you dip it into the tank and it tells you the mains voltage. This is high, but I am finding it difficult to narrow down the problem. I'm thinking it maybe a powerhead and the outlet of the protein skimmer.

How do you narrow down the issue?

I have heard of a grounding piece of equipment, does anyone use this?


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Reply #1

Hi,  I'd go with process of elimination, if you have any Chinese pumps in there probably start with them. I'd turn everything else off leave them on and work from there. If no shock, turn them off then turn something else on and work like that till you find which one it is.
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Reply #2

Yep.  Do that .  Heaters are a common source of this too - often crack or leak.
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Asco1104

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Reply #3

Hi the multi meter is a easy method, put the black lead in the earth pin on one of your spare sockets or run a extension lead, set the meter to AC volts, dip the red end in the water, anything over 50v is a problem.
As above the switch things of one by one and watch the meter.
If you mean a ground probe then there a bad idea, with the nature of salt water it always has a bit of charge in it as it's a electrolyte, without the probe the current has no path to earth but if you add a probe you turn a harmless current in to a circuit wich isn't good.


Tim

Claire

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Reply #4

Thank you for your replies guys.
I think the powerheads are not of Chinese origin, but I will double check! That's very interesting about the ground probe, I think it's best to find the culprit rather than taking that route. I didn't realise they could be more negative than helpful.
I will definitely take a look at the heater as I didn't realise they can be troublesome.
I'm having some difficulty making the black tip connect/ earth in the socket- I'm trying the top one of the triangle socket design. Any tips? I'm just kind of pointing it in there and hoping lol

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Reply #5

If you look inside on the inside wall you will see the copper of the contact.
If you can't try another extension lead, both I have checked you can see the contact, it doesn't have to go far.


Tim

Claire

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Reply #6

Thank you, I will give that a go.
I've used a mains tester, which was a cheap thing so I doubt is as accurate but I found these were the higher results. There doesn't seem to be any one thing that's particularly high, but instead it read both the protein skimmers and a powerhead.
It's confusing this electric thing lol


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Reply #7

What does right plug left plug mean?

If everything is switched on, black lead in earth pin and red lead in the water with meter on AC volts what reading do you get?


Tim

Claire

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Reply #8

It meant right side of the socket on the wall, left side.

My dad saved me! He had a much better piece of kit and it's sorted- thank you so much for your help though!


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ajm83

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Reply #9

what was it?


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Reply #10

Oh the earth is the top one, please do tell what it was?


Tim

Steveanem

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Reply #11

dip the red end in the water

Just to clarify this is the red end of the probe!  lol

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Reply #12

Just to clarify this is the red end of the probe!  lol
Lol yes, not just any old red end


Tim

Claire

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Reply #13

I think it was a combination of using the following piece of equipment rather than a proper multimeter and a dodgy powerhead!


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