Spid3r00 The ground wire is secure well, I can tell you that
It really isn’t - it’s bodged. It’s a real safety risk for anyone that comes into contact with your machine.
The risk is aggravated by your bypassing of the fuse in the power inlet and by the unavoidable proximity of water to the power fixture which means there is a likelihood, no matter how small you think that likelihood is, of that power inlet getting wet.
I already explained that as you have left it, if that power cable - also bodged through the base of the machine with no proper anchor - just a zip tie, gets pulled - the first cable to fail will be the earth cable so there is the potential for the steel case of the machine to become live.
It would take two minutes to make safe, don’t let a bruised ego stop you from doing that.