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Post by edward on Oct 12, 2020 18:40:29 GMT
Indeed
I'm on the hunt for before/after measurements of using a earth spike.
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Post by MikeMusic on Oct 12, 2020 19:11:54 GMT
Can only think Tony would be your man for that
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Post by edward on Oct 12, 2020 20:19:38 GMT
Indeed Tony will be the man.
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Post by MartinT on Oct 13, 2020 6:40:26 GMT
I believe that grounding regulations have been tightened up so it's dangerous to add a house ground of any kind unless you consult with a qualified sparky. You may find, as I did, that your ground impedance is already low so adding your own grounding rod would achieve little.
The use of grounding boxes for signal ground, though, is a completely different thing.
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Post by puffin on Feb 11, 2021 13:54:25 GMT
I forgot that I had posted about this until I saw it in my posting history. There is a update in that I am not using the ground rod anymore. As I said originally it was being used for signal grounding only. However I wanted to see what it would do if it did come into contact with PE. It tripped the consumer unit! So erring on the side of caution it is no longer attached to any kit.
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Post by MartinT on Feb 11, 2021 13:58:14 GMT
It would only take a very small leakage current between the two.
Noise on the signal ground is a different issue that doesn't need or want the Power Earth to dissipate it. Use a grounding box - the good ones work very well and will drop your noise floor and not cause any safety concerns.
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Post by Slinger on Feb 11, 2021 16:27:52 GMT
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Post by petea on Feb 11, 2021 17:30:45 GMT
I do believe that today might be Ground Rod day!  |
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Post by speedysteve on Feb 11, 2021 20:57:18 GMT
I'm pretty sure if you get a multimeter, unplug your kit and probe the earth pin of the plug and any signal ground, you will find continuity. Could be that your mains earth is not very good  or creating a ground loop of some kind has helped things. |
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Post by MartinT on Feb 11, 2021 21:00:37 GMT
1. Power Earth can be a very noisy environment
2. Some components have a, for example, 10 ohm resistor between chassis and signal earth to prevent hum
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or creating a ground loop of some kind has helped things.