Based on my experience administering MOCoPA assessments for a number of different MOP's, what the meter fitter has done here is exactly right.

They can't trust the taped markings on the tails and they have no way of proving the polarity without opening up the consumers equipment, which they're prohibited from doing, the only option left for them is to install an isolator and request that the customer gets their electrician to the isolator.

As for the height and tails flapping around in the wind? That's just shoddy work. In all of the processes I've read, I don't once recall reading anything about a minimum height, but they definitely should have secured those tails with more than a single clip.

Jonathan,

Thank you. I have found the MOCoP, which is useful. I see that a meter should be positioned between 0.5 m and 1.8 m [6.1.(b)] so there is no reason why it could not have been positioned level with the switch fuse.

Appendix 9, para 2: "The MEM or DNO shall only connect a new Customer’s circuit provided it is clearly and unambiguously identified at the end to be connected, either by colour or marking (e.g. L, L1, L2, L3, N) in accordance with the current version of BS 7671."

I cannot see any identification on the L2 and L3 tails, so I agree that the operative was entitled not to connect them and arguably, was prohibited from doing so. I do not think that it is a matter of polarity, but phase rotation which is the problem.

Jonathan,

Thank you. I have found the MOCoP, which is useful. I see that a meter should be positioned between 0.5 m and 1.8 m [6.1.(b)] so there is no reason why it could not have been positioned level with the switch fuse.

Appendix 9, para 2: "The MEM or DNO shall only connect a new Customer’s circuit provided it is clearly and unambiguously identified at the end to be connected, either by colour or marking (e.g. L, L1, L2, L3, N) in accordance with the current version of BS 7671."

I cannot see any identification on the L2 and L3 tails, so I agree that the operative was entitled not to connect them and arguably, was prohibited from doing so. I do not think that it is a matter of polarity, but phase rotation which is the problem.