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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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    and York and Middlesbrough ... in fact I'm at the stage now on not knowing which way around is considered "normal" and which is "reverse". I think we just have to accept that there's no standard.

    Actually some of the older continental practice was in some ways better adjusted - since they used the same colour for at least two of the three lines (e.g. L1 brown, L2 & L3 black)  - that way two could be swapped around as necessary without anything appearing odd and it 'managed expections' rather better.

        - Andy.

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    and York and Middlesbrough ... in fact I'm at the stage now on not knowing which way around is considered "normal" and which is "reverse". I think we just have to accept that there's no standard.

    Actually some of the older continental practice was in some ways better adjusted - since they used the same colour for at least two of the three lines (e.g. L1 brown, L2 & L3 black)  - that way two could be swapped around as necessary without anything appearing odd and it 'managed expections' rather better.

        - Andy.

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