Anyone want a 100A ammeter?

[ARW]

I spotted 3 in a building that are no longer in use. They are about the same size as an old electric meter so bear that in mind when it comes to P&P. No charge for the ammeter itself. Obviously I am happy to send them out individually and not as a set.

If anyone is interested drop me an email and I'll get details of them, take photos and take them off the wall tomorrow. It looked like decent gear - they currently sit between the three single phase meters and the disboard on a now removed 3 phase supply ie they are not handheld devices.

[harryagain]

You might find they run off current transformers.

[meow2222]

Probably ebayable if no-one takes them.

NT

[Davey]

Those kind of things are always going at our local auction house. Make yourself a few bob. Take the phase meters, too.

[Peter Crosland]

Taking them is still theft!

[0845.86.86.888]

+1

They still belong to someone regardless of the apparent "lack of ownership" of the building.

[ARW]

Is it f*ck and nor is selling them or giving them away. They will be going into the skip or Ebay next week unless anyone wants them. And now I have got some lights on in the basement it turns out that they are maximum load indicators not ammeters.

[mick]

As someone has already pointed out, at 100A these will probably be CT operated (100:5A at a guess). You'll need to either remove the CTs as well (probably rings round the mains cables) or short out the wires to them BEFORE DISCONNECTING FROM THE INSTRUMENTS. An open-circuit CT can produce a high voltage on the secondary if there is any load on the primary.

Quite often on an old max demand indicator there is a secondary pointer that is pushed up by the main one and needs to be released with a key or something similar, although there are manual reset ones.

[ARW]

Direct in line 25mm copper tails. And the power was disconnected 12 months ago.

[Davey]

I thought that you had meant something like that when you said: "that are no longer in use" in your OP!

[Johny B Good]

Designed to be 'tamper proof' then. Well, that shoiuld end the speculation about the use of current transformers.