Andy Peters
Well-known member
Brian Roth said:I would suggest a third fuse for the round/grounding pin
Noooooooooooooo!
That would totally defeat the purpose of the ground wire.
Think about it.
-a
Brian Roth said:I would suggest a third fuse for the round/grounding pin
I should clarify.Kingston said:There should not be currents between them unless something is broken. Earth at least here in Finland is a quite literal earth: a +25m meter thick copper cable dug deep in the ground. Both neutral and safety earth are joined to this fat copper earth somewhere in the main electricity box. Condo's are more complex, but the main idea should still be the same.ricardo said:You may like to measure the voltage between earth and neutral at your own house. If you want some fun, put an ammeter instead of voltmeter between earth & neutral. ;D
OK. I shouldn't have said that. Don't try this at home. 8)
That's quite interesting! In France the earth is exactly what you say, but it is mandatory to avoid connection between earth and neutral. I believe it's a remnant of the days of what we called "di-phase", where 220V was two 110V anti-phase; others would call it "balanced power".Kingston said:There should not be currents between them unless something is broken. Earth at least here in Finland is a quite literal earth: a +25m meter thick copper cable dug deep in the ground. Both neutral and safety earth are joined to this fat copper earth somewhere in the main electricity box. Condo's are more complex, but the main idea should still be the same.
abbey road d enfer said:That's quite interesting! In France the earth is exactly what you say, but it is mandatory to avoid connection between earth and neutral. I believe it's a remnant of the days of what we called "di-phase", where 220V was two 110V anti-phase; others would call it "balanced power".Kingston said:There should not be currents between them unless something is broken. Earth at least here in Finland is a quite literal earth: a +25m meter thick copper cable dug deep in the ground. Both neutral and safety earth are joined to this fat copper earth somewhere in the main electricity box. Condo's are more complex, but the main idea should still be the same.
Now that you mention it, I remember having read about it; it's cheap, but it works. Although not allowed in France /Belgium, it is clearly documented in official documents as an existing practice. IMO it's not worse than allowing un-earthed sockets in domestic installations. In France/Belgium, earthed sockets are mandatory only in wet rooms (kitchen, bathrooms, laundry).Kingston said:The joined earth/neutral connection is sometimes done in old houses where new three prong sockets are installed. It's a cheap and questionable practise, something that was apparently done in our last place.
Speedskater said:Typical residential ground rods when measured (not cheap or easy) often measure 25 to 100 Ohms.
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