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Phase rotation

Kelly Marie Angel

Hi all I think its fairly common knowledge that the phase sequence on Merseyside is different from most of the rest of the country  but what I didn't know is that South London  is also different   Blue Red Yellow apparently someone got it mixed up at battersea power station and its been that way since the 1930s is this common knowledge ? Must be very confusing when wiring up motor loads  and other phase sensitive gear its amazing to think one cock up  70 plus years ago is still having an effect now

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    I can see that when the many power stations in London supplied just their local boroughs, they could choose their phase rotation. I can also see that the phase rotation can be changed at any transformer, but surely the rotation must be the same throughout the National Grid?

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    I can see that when the many power stations in London supplied just their local boroughs, they could choose their phase rotation. I can also see that the phase rotation can be changed at any transformer, but surely the rotation must be the same throughout the National Grid?

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