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Adding an earth to a 15th floor 20 year old condo.


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I was in the same situation on lvl 15 with no earth.  Apparently they had pro-vised it through the lift shaft which no condo had connected to it.  I just had to supply copper wire and the maintenance

I'm sure Crossy would appreciate a photo of the switch board  with the cover removed to  view internals

Yeah, that's a shame, I've seen units that take an earth to the board then no further.   Task A is to talk to the condo management to see if they have a sparks available, then get him to loo

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Older condos are always going to be fun.

 

Are you sure there's no earth in your distribution board? Could you post a photo with the lid off so we can be sure (care please).

 

A metal pipe is likely to be a good earth but don't use the fire pipe and it would be best to make any connection inside your unit or you may attract the wrath of the condo management.

 

If there's any building steel that's accessible that would also be a good bet.

 

You may find the condo have a "recommended" (use is required) sparks so the office is a good place to start.

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Is that pipe available inside the condo?

 

Also, is this a rental unit or yours?

 

And, of course a photo of the board with the cover off (care please).

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2 minutes ago, Crossy said:

Is that pipe available inside the condo?

 

Also, is this a rental unit or yours?

 

And, of course a photo of the board with the cover off (care please).

We are the owners - the pipe is outside the unit in the corridor. 

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The only problem you could have if you use a metal water pipe, is what happened decades ago in the UK when metal water pipes were used as earths.......very often some of the pipes, or part of the pipe network were replaced with plastic pipes and fittings, so you didn't have an earth in effect.

 

The other thing was that if many people had used the same metal pipe as an earth, then if there was minor leakage to earth over time, using that pipe, then it would corrode the pipe and you would get a water leak.
 

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1 minute ago, xylophone said:

The only problem you could have if you use a metal water pipe, is what happened decades ago in the UK when metal water pipes were used as earths.......very often some of the pipes, or part of the pipe network were replaced with plastic pipes and fittings, so you didn't have an earth in effect.

 

The other thing was that if many people had used the same metal pipe as an earth, then if there was minor leakage to earth over time, using that pipe, then it would corrode the pipe and you would get a water leak.
 

So being on the 15th floor sounds fairly problematic. We were getting used to having cold showers and we could take the unit back if it all proves undoable. 

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1 minute ago, Crossy said:

 

Yeah, that's a shame, I've seen units that take an earth to the board then no further.

 

Task A is to talk to the condo management to see if they have a sparks available, then get him to look at the issue. 

 

The risk of corrosion to the pipe is small with AC, a DC current is a whole different ball game (there can be significant problems with DC traction railways), but as noted earlier if they replace the pipe with plastic ...

 

I would also think about adding earth-leakage protection to that board.

Many thanks for all your help. I will do as you suggest and update the thread when I have a response. 

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4 minutes ago, najomtiensun said:

So being on the 15th floor sounds fairly problematic. We were getting used to having cold showers and we could take the unit back if it all proves undoable. 

Just a suggestion, and possibly something to think about....... if the service duct outside of your condo goes all the way to the ground, which it did in many older condominium structures, then you could feed a good-sized earth wire through it to the actual ground, probably where the water pipes enter the building and do something from that perspective.

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