Non Standard Plugs and Sockets - Wandsworth
Large square earth pin
A Wandsworth branded plug with a large square earth pin. This is considerably wider than the standard pin, so will not fit into standard socket outlets.
Line and neutral pins are unchanged.
The back has the Wandsworth logo and Fused.
It is not clear whether Wandsworth created this style of non-standard plug, or if they were one of several manufacturers making this design.