Don't ask... Wienstrom policy is: if anything is touched (officially) bring it up to code - even if that means tearing up a whole apartment building basement to attic just because they feel according to their criteria (unknown to anyone else in the universe) the feeder size is insufficient. Their newest stroke of genius: special locks for everything, including residential panels, magnetic keys only sold by the power authority and personalized for everyone. That means, if a tenant loses his panel key, s/he has to file a loss/theft claim and take a pilgrimage to the power authority to get a new, registered key... and I don't think these keys are cheap!
Would you want to pay at least $3k just for "Having a ground wire pulled through the existing conduit to your meter" because grounding to water pipes is no longer legal?
What seems like a simple job turns into a nightmare - in order to access the feeder conduit the meter seal has to b opened. That means the existing 6mm2 4 wire feed is no longer sufficient (PoCo requires 10mm2 even though they only offer 25 amp fuses for which 6mm2 is fully sufficient), for 10mm2 the existing 30mm conduit is too small, the old main fuse box has to be replaced, necessitating new boxes with the new locks in the whole building,...
Anyone surprised why people will do anything to avoid having the PoCo involved?