Talk:Earthing Types

One thing I think would be really useful would be an expansion of this article that explains to people how to identify the different earthing types by inspection of their incomer and other cable head end gear etc.

So diagrams like in the OSG for the types, and then photos showing what to look for. I have a couple we can use for TT, but we need more to cover the variety of TN-C-S implementations that seem to vary with REC.

--John Rumm 16:34, 20 October 2010 (BST)

I'll start taking my camera to work. I am not photographing mine as I am far too lazy to move the fridge/freezer to get the shot. Is it just TN-C-S you want or TNS as well? Also a few newsgroup users have occasionally put photos up to help with their problems. They might let you use the pictures. --ARWadsworth 17:05, 20 October 2010 (BST)

I have some TT photos like :

,

but some TN-S and TN-C-S would be handy. --John Rumm 19:25, 20 October 2010 (BST)

Quiz

Not sure whether to put this here, or in the main article, or as a separate article. Got several such pics somewhere... can't find the others though...

To check you understand the material presented, see if you can work out what type of earthing is used in these installs:

NT 23:31, 20 October 2010 (BST)

Well having tweaked the brightness enough in photoshop to actually see it, it looks like a manky bit of 4mm² earth single vanishing into something embedded in a wall. Given we can't see the context, the best guess would be its on its way to some local earth connection to provide a TT earth.

Do I get a coconut? --John Rumm 14:53, 21 October 2010 (BST)

Heh :) The other 2 pics, if I ever find them, are:

1. a late 1800s fusebox found hidden & still in use recently. A piece of slate with a wooden frame, fuse wire fixed under screws screwed direct into the slate. Presumably IT
2. A russian fusebox using a scraper as an ad-hoc bare knife switch, and I think just two screw-base fuses, so likely pre-war.

NT 15:49, 21 October 2010 (BST)