A few years ago my supplier in Spain decreed that new cabling was required into my apartment..upgrading the supply was the best I could learn. They fitted new supply and, at the same time, took out my old, all metal, CU, and fitted this plastic one...now I am expecting them to tell me I must have an all-metal one again...but who knows?
Anyway, here's some pics for your comment...a bit too much exposed copper for my liking, but otherwise quite neat. Oh, the 2 seals are replaced by whatever electrician turns up to fix stuff. As for the rather poor pic of the screwdriver...it came free with some cheap toolset, and though it maybe isn't clear from the pic, the blade is twisted beyond use...and I only used it to change a plug!
Anyway, here's some pics for your comment...a bit too much exposed copper for my liking, but otherwise quite neat. Oh, the 2 seals are replaced by whatever electrician turns up to fix stuff. As for the rather poor pic of the screwdriver...it came free with some cheap toolset, and though it maybe isn't clear from the pic, the blade is twisted beyond use...and I only used it to change a plug!