Anyone remember the old Reyrolle plugs?, these were made of cast Aluminium?, and used a Scraping Earth contact arrangement.
They were banned here in 2000, we are still
removing them from Industrial sites, I got a
really good shock off of one of these plugs,
a few years ago, trying to unplug a motor in a glycol plant, in the freezing works, where I was working as an Electrician,
good to see these old plugs banned. [Linked Image]