Another “what is this” thread.

[Deleted member 49549]

We’ve got these ac sockets in work with an unusual ‘T’ shape for the earth pin. What sort of equipment is this for?

 

[Mr Perceptive]

Designed for circuits with a clean earth, there are corresponding T shape earth plugs

 

[wyx087]

Apparently it's designed to supply a clean earth or special medical equipment.
https://www.plugsocketmuseum.nl/British2.html

Probably to prevent people plugging equipment that require clean earth into standard 3-pin sockets.
Or to stop people plugging phone chargers into medical equipment sockets.

 

[Deleted member 49549]

Thanks both. What would be the need to have one of these in a meeting room?
Ps been working here for years and have never seen them used...