I must have used miles of perforated copper tape years ago. It was available in 3 grades I think the largest being 1” X 1/8”. It could be plumbed to the sheath of paper lead cables. I don’t know why it went out of favour, it was great for trunking / tray installs. I used to run it unbroken the full length of the install.
seen some on an old job a couple of years back. was head scratching when i couldn't get a sensible Ze from the earth bar in the CU. turned out there was no continuity between the earth bar and the steel enclosure.
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