As a new question follow-up to a previous question, i have another learning experience in my attic.
A long time ago someone installed more switches and new plugs, to control a portable high-speed fan for house cooling. I'd like to understand how this is supposed to work, why they did it like this, and why the plugs are "always on" regardless of any switch position combination
I suspect the installer wasn't that great because in the junction box there are no wire nuts, only electrical tape, and they reused a bare copper wire as hot, just wrapped itself in electrical tape too
In the diagram below, the PURPLE wire indicates the bare copper wrapped with tape to insulate itself
The overall goal is to replace the few remaining strands of Knob and Tube, but when i started opening up the floorboards and found this, i had to ask, what the heck is going on here.
I should specify, in Switch 1 black and purple are different connections not the same screw. In Switch 3 however, red and black are on the same screw.
disclaimer - this is just to grow my own knowledge, i understand I'm not an electrician, should hire one if unsure, and we're all on the internet... nothing you say can or will be taken as professional instruction and no liability can ever be applied to you the respondents or EE.