Museum of Plugs and Sockets logo, small General  Information
on plugs, sockets and wiring techniques
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A number of pages on the DMPS website give information about historical and technical aspects in general. Links to these pages are given below.


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Diversity and Safety of Domestic Plugs and Sockets   [click to see the page]
An illustrated history of plug and socket evolution.

Socket Safety Shutters  (click)
Three methods to cover socket contacts explained.

Appliance Connectors; historic notes about precursors of IEC 60320.   [click]

Certification marks found on plugs and sockets.  [click]

Compatibility table.   [click]
6 sockets used throughout Europe compared with 20 types of domestic plugs.
Delta-Wye icon
Three-phase AC generator, with animation that explains basic principle.   [click]

Three-phase transformers; source of 120, 208, 230, 277, 400 and 480 Volt.   [click]

Split-phase wiring; commonly applied in US homes.   [click]

Radial and Ring circuits; different domestic wiring techniques.   [click]
MPAD and DMAW marks

MPAD and DAMW marks found on German plugs and sockets.   [click]

Origin of Schuko plugs
.   [click]
A detailed, illustrated reconstruction of the developent of a widely used earthed plug.

Manufacturers of plugs and sockets.   History and logos of classic and still existing companies.
Flag of Germany
Flag of UK United Kingdom
Flag of USA
United States
Page with the following
four countries:

Flag of Austria
Flag of the Netherlands
Flag of Norway
Flag of Sweden

More countries will follow

Another type of wiring ...

Wiring in Cluj-Napoca

not in the collection, but seen in Cluj-Napoca, Romania (2009)


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