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Phase rotation

geov
Hi all, long time not here, but as always, value the opinions of members.

EICR on a commercial. Incoming phase rotation correct at head, but all 8 sub mains in the MCCB panel have been incorrectly installed L3, L2, L1.

Been like this since the building was refurbished 10 years ago.

They do have some three phase equipment which is running happily ( tho’ I’ve not been able to switch off to see if the rotation fail  has been corrected at the local isolator).

I’m minded to code C3 - anyone disagree & if so why?
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    Graham,


    I can't argue with your logic, but why is there a requirement to verify that the phase sequence is maintained if there is not actually a requirement to maintain it?


    I fully agree with your last paragraph. The regulations are essentially about ensuring an installation is safe and if phase rotation is not important then the phase sequence has no impact on safety.
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    Graham,


    I can't argue with your logic, but why is there a requirement to verify that the phase sequence is maintained if there is not actually a requirement to maintain it?


    I fully agree with your last paragraph. The regulations are essentially about ensuring an installation is safe and if phase rotation is not important then the phase sequence has no impact on safety.
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