The'third pin'( the one that is different to the other two, or is aligned different to the other two ) on the power plug carries the earth connection.
32.
For a transformer, this can mean that the primary and secondary windings must be separated by an extra insulation barrier, or by a conductive shield with a protective earth connection.
33.
Europlugs are only designed for low-power ( less than 2.5 A ) Class II ( double-insulated ) devices that operate at normal room temperature and do not require a protective-earth connection.
34.
That's theoretically enough-but in practice, you have to have really good earth connections-especially since your battery is just a few volts . talk ) 18 : 12, 1 September 2010 ( UTC)
35.
At its next annual meeting, the American Association for the Advancement of Science, the world's largest general scientific society, is holding a session titled " New Frontiers in the Sun-Earth Connection ."
36.
The larger top pin is the earth connection, the left hand pin is neutral and the right hand pin is line when looking at a socket or at the rear of a plug.
37.
Scientists from NASA's Sun-Earth Connection Education Forum, San Francisco's Exploratorium and Discovery Online will be teaming up to broadcast images of the eclipse, along with demonstrations, interviews and background reports on the Web.
38.
:: : You are surely correct; there are several styles of " IEC Inlet Connectors " depending on the amount of current and the need ( or not ) for a safety ground / earth connection.
39.
Rewireable plugs must be designed so that they can be wired in a manner which prevents strain to the earth connection before the line and / or neutral connection in the event of failure of the cord anchorage.
40.
A standard socket-outlet in Australia provides a nominal voltage of 230 volts RMS at a maximum of 10 amps and always includes an earth connection . " Shuttered " socket-outlets are available, but these are not required by regulation.
