I realized it has a screw. I opened it. What I'm not sure of is how the wire gets secured.
Anyone knows these? (Even if it is not a Z plug).
The old wire all had disintegrated, so want to be able to reuse the plug.
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I think the ends of the wire (possibly stripped) are clamped, one in each of the center channels, by the brass blades. The blades may even be designed to cut the insulation. You can see, at the bottom of the channels, where the plastic is slightly distorted from clamping the original wires.
It amazes me what passes in the USA for acceptable electrical practices, especially with plugs like this. I am hopelessly biased in favour of the UK 3 pin plug
If this plug from 40s, I doubt 3-pin plugs were popular back then....
You'd be surprised Mike:
https://en.wikipedia.org/wiki/AC_power_p...ated_types
3 pins go as far back as 1911, with British Standard designated plug designs being defined as early as 1928. Connectors were standardised, it seems, before the actual supply was brought to a uniform specification!