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Has anyone noticed the rather random arrangement by which the MIG welder gets its feed? There are 3 single phase meters. One feeds the SP+N C/U, the other two feed the spot welder switchfuse directly (which has no N or 3rd phase, so I suspect the spot welder is single-phase 4ooV, run between two lines. Then those two lines loop out as the blue cables in flex conduit up to the 3-phase MIG welder switchfuse which gets its other phase from the SP+N CU. If any of these three are after the main switch in either the CU or the S.W. SF, then part of the installation will remain live when its main switch is turned off. Hopefully they are before, in which case they are extensions of the meter tails, so probably still a bit naughty.
And yes, there seems to be a lack of green-and-yellow!
And yes, there seems to be a lack of green-and-yellow!