I was looking at an image in another post - copied below - and noticed the label 'Rotation anti-clockwise' on the lower MEM item of switchgear which is the main incomer. I wondered why it was mentionedat all on the cover since L1, L2, L3 or RYB and now Br, Bl, Gy is the positive phase sequence which by convention is anti-clockwise when drawn on a phasor/argand diagram. See this which shows positive theta as ACW:
ARGAND DIAGRAM Learning Outcomes: - ppt download - https://slideplayer.com/slide/14827226/
Early in my career I remember a Liverpudllian who worked for me telling me about the 'fault' he had found on a newly installed 3 phase motor which made it turn the wrong way - the Liverpool Cross he said. Not an expression I had come across before or since but the image I first mentioned triggered the memory. Others might be interested to read what I found:
https://www.------------/groups/117613521636810/posts/1230818720316279/?comment_id=1231192666945551
The link above is denied by the EF - Instead Google - 'MANWEB LIverpool Cross' to arrive at the facebook ditty by ex MANWEB staff.
The Liverpool Cross - http://www.pecplc.com/index.php/articles/the-liverpool-cross
ARGAND DIAGRAM Learning Outcomes: - ppt download - https://slideplayer.com/slide/14827226/
Early in my career I remember a Liverpudllian who worked for me telling me about the 'fault' he had found on a newly installed 3 phase motor which made it turn the wrong way - the Liverpool Cross he said. Not an expression I had come across before or since but the image I first mentioned triggered the memory. Others might be interested to read what I found:
https://www.------------/groups/117613521636810/posts/1230818720316279/?comment_id=1231192666945551
The link above is denied by the EF - Instead Google - 'MANWEB LIverpool Cross' to arrive at the facebook ditty by ex MANWEB staff.
The Liverpool Cross - http://www.pecplc.com/index.php/articles/the-liverpool-cross
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