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Old 15th Sep 2019, 10:50 pm   #91
ORAWA01
Hexode
 
Join Date: Apr 2011
Location: Stirlingshire, UK.
Posts: 360
Default Re: Antenna recommendation for 40 and 80M bands

Quote:
Originally Posted by Skywave View Post
Quote:
Originally Posted by budkor22 View Post
I am still not understanding your comment "at least one Mains socket 'E' pin should be connected to the water pipe," when none of them is connected.
O.K.: let me try to bring out the significant points.

First: the 'E' pin of every 230-v.a.c. socket in your house must eventually make a good electrical contact with the real earth - i.e. ground. That is an essential safety requirement. That could be achieved by all the 'E' wires from every socket being connected to the metal pipe that brings water into your house, the electrical connection being as close to the point as possible where the pipe enters your house.

Second: current electrical safety standards require that all permanently exposed / permanently fixed metalwork in your house must also be connected to ground. This is also a safety requirement; it is termed 'electrical bonding'. Also refer to post #87 above.
[Note: That is my understanding of this part of current electrical regulations but you should not rely exclusively on my wording, since I am not a qualified electrician.]

Third: the reason for the above is that should an electrical fault develop whereby the 'live' conductor of the mains wiring comes into contact with any such unearthed metalwork - e.g. a copper pipe (which could, for example, be for water or gas) - and should a person touch that item with any other part of his / her body which is also in contact with earth, the person could receive an electrical shock - which, under some circumstances, could be fatal; if not fatal, still likely to cause 'consequent injury'.

Fourth: The above is especially relevant where copper piping has non-conductive unions in its run. Such a union will separate the (hopefully) earthed part of that pipe from the insulated other part of that pipe. In such cases, both parts of that pipe should be earthed, possibly by means of a jumper wire between the two parts.
Modern-built properties make extensive use of plastic pipe; older ones tend to use copper and a mix of copper and lead. It is a bad idea to have a mix of metal and plastic.

Hopefully, matters are clearer now.
All good thank you.

But I am not interested in finding out about how electrical earth has to bond to water pipes ... etc. I feel that is looked after by the power supply company, and we are the consumers, who are using their service and supply. I feel more so now, it is something that is in the domain of the professional electricians or power company, and I don't want to have anything to do with it

The electricity had been newly installed and rewired not long ago by the professionals, and everything works all fine. I had done some checks on the mains electrical earth system following checking procedure demonstrated by the youtube video of somebody, and it was very good earthing system within the good spec. not long ago. And all the mains socket E pins are connected to each other, which means that it is connected to some sort of proper earthing system. That is all I can be sure, and it is fine with me.

As I have repeated about 10 times in this thread, that only thing I have checked and ensured was that the power sockets E pins and the mains water pipes have no electrical connectivity prior to attachment of the coax earth to the outside tap using more than 5 meters of heavy duty thick wire.

It worked all fine as few days of makeshift antenna, and now had been taken off.
I am just going to work on with the LF antennas, not the earthing system, because everything is working fine. If there is problems with power, we will contact the power supply company, and they will sort it out for us

Last edited by ORAWA01; 15th Sep 2019 at 11:18 pm.
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