Hot tub electric shock

[Samhhh]

Hi I'm looking for some advice, yesterday when exiting my hot tub I felt a slight electric shock when my foot made contact with the ground around the hot tub. I work as a cable jointer so a tingle is second nature to me so I double checked when in contact with ground and water I can feel a slight tingle in my fingers when isolated from ground I feel nothing. Today I put my multimeter onto a nearby earth terminal and probed the water to get a reading of 0.2volts. Im on a pme supply and have a cable running from a rcd to a isolated and then a feed to the tub. Any idea where this voltage could be coming from? And if installing a seperate earthing point with rods would solve the issue? Thankyou

 

[marcuswareham]

Their web site is utter crap!

Yeah bit annoying you can only see product descriptions and not buy them or see price etc

 

[pc1966]

The other places to look at for earth rods, etc, are those doing lightning protection such as Kingsmill and A. N. Wallis.

Earthing - Kingsmill Industries

Earthing products safely discharge earth fault and lightning discharge currents into the ground. Our product range includes: earth...

kingsmillindustries.com

Earthing Archives

Browse our range of Earthing & Lightning protection equipment and products online at AN Wallis including earth Rods, Bars, U Bolt Clamps and more.

www.an-wallis.co.uk

 

[LastManOnline]

I've just spoken to my brother and he thinks it's potential difference too. He's said one way to prove it completely would be to turn off and open up the rotary isolator and remove the earth connection then test again

Just got a chance to catch up on recent developments on this post. Now that it's been proved conclusively that the hot tub is not the issue, it must be the supply that's causing it. Reading through the posts, it's unclear to me if you actually carried out your brothers suggestion??

 

[Samhhh]

Just got a chance to catch up on recent developments on this post. Now that it's been proved conclusively that the hot tub is not the issue, it must be the supply that's causing it. Reading through the posts, it's unclear to me if you actually carried out your brothers suggestion??

I didn't he's coming round this week to test it himself with proper equipment. I will update with the results as soon as its done ?

 

[LastManOnline]

I didn't he's coming round this week to test it himself with proper equipment. I will update with the results as soon as its done ?

Good to hear.. Its almost certainly the problem. Good news is you will know what you are dealing with ( volt drop on the DNO, s neutral which is connected to your earth). "Bad news" is, that's not something you can fix. But your options (as explained by other posters) to either use rubber matting around the tub or TT the supply are within your own control

 

[Samhhh]

Good to hear.. Its almost certainly the problem. Good news is you will know what you are dealing with ( volt drop on the DNO, s neutral which is connected to your earth). "Bad news" is, that's not something you can fix. But your options (as explained by other posters) to either use rubber matting around the tub or TT the supply are within your own control

So my brothers been and tested the installation on his side all good no faults are leakage to earth. We disconnected the hot tub from the double pole so it was fully off the system, all readings where fine but when tested from the open end earth to ground outside the voltage was still there. So it looks like it is potential difference and I think the best thing would be like you say to rubber matt and put a non conductive material down. Looks like I'm going to have to go over my nice Indian stone patio with composite. Thankyou very much to all who helped get to the bottom of this ?

 

[marcuswareham]

So my brothers been and tested the installation on his side all good no faults are leakage to earth. We disconnected the hot tub from the double pole so it was fully off the system, all readings where fine but when tested from the open end earth to ground outside the voltage was still there. So it looks like it is potential difference and I think the best thing would be like you say to rubber matt and put a non conductive material down. Looks like I'm going to have to go over my nice Indian stone patio with composite. Thankyou very much to all who helped get to the bottom of this ?

or TT the tub to keep the indian sone

 

[marcuswareham]

or TT the tub to keep the indian stone