Re: [CAD_CAM_EDM_DRO] Re: power supply connection issues

jagco1998 wrote:

>I live in an old house. And the last time I changed a burnt outlet,
>it was not grounded(only had 2 wires...black and white)
>So if I want to use this supply I need to drive me a grounding rod
>and run the "G" terminal off of that and hook up the other two Wht
>to Wht.........Blk to Blk. Right?
>Is the grounded green wire to grounding rod really necessary?
>Will not using this "G" terminal hinder the performance of the PS or
>cause it to malfunction?(ie. just using L and N to power the supply)
>I realize that I probably sound like an idiot , but I payed good
>money for this used Power supply, and I do not want to burn it up
>before I even get to use it throwing some chips!
>
>

For gear like this, it will be best to run a 3-conductor cable through the
walls. It may not be hard at all to use the existing wire to pull a new
12-2 with ground cable into the walls. There is a safety concern with
machinery having large expanses of metal to lay your hand on. A ground
rod separate from the rest of the electrical system is 'illegal', as the rod
may or may not make good contact with conductive earth.

The power supply will almost certainly work without the ground, but if
there is a malfunction that bridges the insulation of the power supply, you
could get zapped. I tend to be pretty cavalier about a lot of stuff,
but at least
when I get stuff permanently installed, I make sure the safety grounds are
properly done. Don't trust a separate ground rod, because when a real short
develops, it may have to sink hundreds of amps until the breaker blows,
and if you are touching the machine at the time, you'll get the voltage drop
across your body. Only a solid metal conductor running all the way back
to the transformer neutral can guarantee that such a voltage drop will
be small.

Jon