Laser Machine Grounding/Earthing

[longy]

Found this Laser Machine MaintenanceLaser power and the machine body must have good grounded power connection. The earth wire should be connected between the power transformer and the machine grounding connection.
A good grounded connection is great for the following reasons:
A good grounded connection will assure the laser power to work normally
A good grounded connection can extend the life of laser tube
A good grounded connection will prevent any other electrical interference which can impact the outcome.
A good grounded connection will prevent any electrical damage to the machine.
Please make sure to ground the machine properly!

Also I would think that a large amount of static would build up when cutting plastics if the laser was not grounded. Watering the earth stake that's something I've never heard of, besides most household earths have been on PME for the last 30 + years.

[Want2build1]

link here => Untitled

it seems it isn't straight forward, so I will do some more research !

I will make an earth point at the work shop and see if there is a PD between the supplied earth, and my local earth.
Obviously, if there is a PD, then a current will flow !

20yrs ago, when I bought my 1st house, the bathroom, when damp, (after a shower etc.) whould have an earthing problem. if you stood at the sink, and touched the tap, you would get a tingling feeling.. I measured the tap voltage at 50v with the damp floor. I contacted the leccy board who told me earthing was the housholders responsibly ! ... so I bonded the pipes and made a ground earth and all was good :)

My current house is 200 yrs old, and TBH I haven't considered the earthing untill now !
It definately hasn't been re-wires for a long time.
I'd have done it myself by now, but 'we' aren't allowed to any more :(
(yes, I'd have read the current regs and done it properly )