Isolation transformer source

"Wild_Bill Top Poster from Hell"

** The only point you have, pal, is on the top of you fat head.

** Could not be plainer that you did NOT understand the issue

AT ALL !!!!!!!!!!!!!!!!!!

.... Phil

Why is the test equipment grounded?

--
*Hard work pays off in the future. Laziness pays off now *

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

Yawn... Why are people stupid?

--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

Yawn. You really do need to sort out how to work in a safe environment. All it needs is some common sense. Do you ground one side of a battery DVM too?

--
*Why doesn't glue stick to the inside of the bottle?

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

"PeterD"

** If only that were true ...

.. Phil

Dang, you confirm stupidity... Amazing! Any test equipment DESIGNED to not be grounded isn't grounded. And test equipement that is designed to be grounded damned well better be grounded.

Noise reduction.

greg

The Tripp-Lite device has secondary attached to GROUND. This is NOT want you want. All Tripp-Lite supplies are attached to ground forming a new neutral to make a noise reduction device, period.

I hope the second device has ground isolation.

Greg

Proper is the key. I would say over 98% of so called isolation transformers are for noise control, not serving chassis.

Greg

This is the description in the specs...............

Neutral to ground bonding at the secondary eliminates common mode noise and provides an isolated ground reference for sensitive equipment

What they really mean is a new ground to neutral reference. They make it confusing. For testing chassis, you need a ground isolating isolation transformer.

greg

Check out stock number 72-6670 isolation transformer $65.00. We've had one for years and it works very well. Chuck

If you are isolating the equipment you're working on for safety reasons doesn't it make sense to use isolated test gear too?

--
*How can I miss you if you won't go away?

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

Then they should have a different name.

--
*If you don't like the news, go out and make some.

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

Thats what I said before !!!!

greg

No.

--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

Perhaps you are a little inexperienced. There was a time when virtually ALL test equipment came with a two wire (ungrounded) cord. Then it was decided that having technicians electrocute themselves was undesirable from both efficiency and moral viewpoints. As a result, signal generators, oscilloscopes, frequency counters, alignment generators, etc all were supplied with a 3-wire cord. Thus, when an oscilloscope was hooked to a live chassis TV the probe ground burst into flames rather than the technician falling to the floor in cardiac arrest. Of course, there were those brave (or foolish) souls who cut off the ground pin on the power cord to save a few dollars. While others might disagree, I feel that using an isolation transformer is preferable to losing my life.

PlainBill

Looks like we have a winner.

Thanks again, Chuck. And thanks to all who contributed to the thread.