Charles Hesterman Merz was a British electrical engineer who pioneered the use of high-voltage three-phase AC power distribution in the United Kingdom, building a system in the North East of England i
The National Grid covers most of mainland Great Britain and several of the surrounding islands, and there are interconnectors to Northern Ireland and to other European countries. Power is supplied to
400 kV power line in Cheshire
A typical offshore oil/gas platform
Left: a typical moulded BS 1363 plug, showing the fuse access from the underside of the plug. Right: a typical rewireable plug; the large central screw releases the cover, allowing access to the terminals and also the fuse.