Most modern moulded Schuko plugs, and good-quality rewirable replacements, are a hybrid version ( " CEE 7 / 7 " ) with an aperture that accommodates the earth pin of CEE 7 / 5 sockets.
32.
The pin orientation was codified in the 1950s with the Earth pin required to face downwards, so that the longer Earth pin will be the last to lose contact if the inserted plug is tugged downwards.
33.
The pin orientation was codified in the 1950s with the Earth pin required to face downwards, so that the longer Earth pin will be the last to lose contact if the inserted plug is tugged downwards.
34.
Also, at least in the UK, the earth pin is often not electrically connected to anything; it is just there to open the socket shutters .-- feed me 10 : 05, 7 September 2007 ( UTC)
35.
Incidentally, a NEMA 5 20 ( 125 V, 20 A ), a NEMA 6-15 ( 250 V, 15 A ) or a NEMA 6 20 ( 250 V, 20 A ) plug with a missing earth pin would fit this socket.
36.
Some older industrial buildings in Spain used sockets that took a plug rated for higher current and had two flat contacts and a round earth pin, somewhat similar in design to the ones found on American plugs but larger in size.
37.
If you know how to use a multimeter, check between your nuetral bar ( in meter box ) or the nuetral or earth pin of any wall outlet and the earth stake, on the earth stake below where the wire connectes to it.
38.
On 3-pin ( 2P + E ) connectors, it is located on the contact circle opposite the ground pin . ( The other connectors are located 105?on either side of the earth pin, rather than 120?as in the smaller variants, to make room for the pilot pin .)
39.
France, Belgium, the Czech Republic, Slovakia and Poland use the CEE 7 / 6 plug and CEE 7 / 5 socket with the same size and spacing of the main pins but with a male protective-earth pin on the socket instead of the earth clips, and without the guiding notches at the sides.
40.
George H . Scholes Ltd . of Manchester first introduced plugs with a hollow round earth pin between rectangular current-carrying pins in 1926 under the Wylex brand name, enabled Scholes to propose their system as a possible solution for the new standard competing with the Dorman & Smith round pin solution, but it was not selected and the completely new BS 1363 design prevailed.
