[DANGER] Grounding issues

[olivbd]

I noticed that:

The bed seems to be NOT isolated and grounded. What happens if the heat pad is defective and the user touches the bed?

All metal parts must be grounded to an earth wire.

[StefanIGit]

Hi, sorry but rtfm man... Step 9 red text and 3rd image
https://ratrig.dozuki.com/Guide/07.+Bed+Assembly/77#s462

[ptegler]

not the RED text but three lines below that
If your heat pad faults, and shorts to the bed plate, it 'should' blow your fuse.
And yes, ANYTHING AC line powered, your frame should be earth grounded as well, even if not using AC mains for the bed heater.

[olivbd]

Hi, sorry but rtfm man... Step 9 red text and 3rd image https://ratrig.dozuki.com/Guide/07.+Bed+Assembly/77#s462

Ok thanks, I didn't noticed that but it should be clearly mentionned that the ground wire MUST be wired in that case.

not the RED text but three lines below that If your heat pad faults, and shorts to the bed plate, it 'should' blow your fuse.

No: fuse will blow only if neutral and live wire are shorted.

And yes, ANYTHING AC line powered, your frame should be earth grounded as well, even if not using AC mains for the bed heater.

We agree: frame and bed should be earth grounded.

[StefanIGit]

Ah ja, my bad the text with the RED dot :)
And yes it could be more clear, not a lawyer, but as the red text says This is a mains voltage element, you should consult an electrician when dealing with it

[White-Rabbit-Scientific]

Um, if using mains voltage, ALL metal should be earthed/grounded. Especially the frame and the build plate. It would be wise to use an earth leakage breaker to cut power in case of mains leakage or fault.