Re: Parallel Port to Power Supply Grounding Differential

Don:

I agree 100% with your assessment. All of my equipment racks,
milling machine body, motor housings, cable shields, negatives on my
DC power supply, etc are connected to a single ground bus which is
tied to the AC ground. I have never experienced any problems
associated with the infamous ground loops (and wouldn't expect to).

As a suggestion to your inquiry about suitable shielded wire:

This works great on my Bridgeport, but might be overkill on a Taig (I
know its small, but I've never seen one). I use "Sealtite" liquid
tight armored cable to provide a conduit through which I can run the
wiring of my choice. It provides a ground, is flexable, able to
withstand liquid coolant, and lets me re-wire at will with
inexpensive cable. It runs from device to device with threaded
connectors, so the electrical devices are never exposed to the
elements. I have a photo showing what I mean in the Photo section of
the MASTER5 chat group under the name WASHCOMP where the limit
switches are connected with the stuff. I used 3/8" trade size, but
it may be available in smaller sizes for your machine.
Regards,
Jeff

Link to photo:

http://photos.groups.yahoo.com/group/master5/vwp?.dir=/Washcomps+CNC+B
ridgeport&.src=gr&.dnm=Limit+switches.jpg&.view=t&.done=http%
3a//photos.groups.yahoo.com/group/master5/lst%3f%26.dir=/Washcomps%
2bCNC%2bBridgeport%26.src=gr%26.view=t