As others have stated; leave it alone please. I admire your conviction, but thats exactly what you could end up with.
Your bosses sound like they don't give a damn, so why should you!.
God forbid someone gets a fatal shock, or there is a fire and an investigation is launched ( which there will be ) then the 1st question asked will be, who was the last person to carry out any electrical work, this is you and from what i've read so far , your employers won't hesitate to give them your name. Please walk away from this problem.
Your bosses sound like they don't give a damn, so why should you!.
God forbid someone gets a fatal shock, or there is a fire and an investigation is launched ( which there will be ) then the 1st question asked will be, who was the last person to carry out any electrical work, this is you and from what i've read so far , your employers won't hesitate to give them your name. Please walk away from this problem.