Re: [CAD_CAM_EDM_DRO] Variable Transformer...my 2 cents worth....

Hi all.... kind of getting in the middle of this so please cope if I am out of line.....

So your saying that variac should only be use to adjust the ac line voltage? That it shouldn't be used instead of a transformer? As far as saftey, what about using a line fuse and the knowlege of good wiring practices?

The only reason I bring this up, is because I had my table top cnc for over 9 years, and it was commerial built, and uses a variac.....

Russ

Alan Marconett <KM6VV@...> wrote:
HI Andy,

No, I didn't mean to imply anything about anybody. And I'm perfectly fine
with questions and answers! I'd have given a more elaborate answer, but was
short on time. I was a bit hasty in my original "NO". I don't wish to
offend anyone! Neither do I want to see someone hurt.

We did get some good explanations, better then I could have come up with!

Hopefully this thread will come up the next time someone searches for
"VARIAC".

Alan KM6VV

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Andy Wander
> Sent: Wednesday, June 29, 2005 9:28 AM
> To: 'CAD_CAM_EDM_DRO@yahoogroups.com'
> Subject: RE: [CAD_CAM_EDM_DRO] Variable Transformer
>
> Alan:
>
> I hope you don't mean to imply that because I wish to ask questions, and
> discuss it, that I am NOT concerned with safety?
>
> There are many different kinds of people-some will take a "NO!" as gospel,
> others want to know why. If you won't tell them why, they may just try it
> anyway-if it IS dangerous, they may get hurt.
>
> Dissuade all you want(or think you should) but when somebody asks a
> question, just restating "Because it's dangerous" is not very helpful, in
> my
> opinion.
>
> Andy Wander
> Verrex Corporation
>
> -----Original Message-----
> From: Alan Marconett [mailto:KM6VV@...]
> Sent: Wednesday, June 29, 2005 12:10 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Variable Transformer
>
> Hi Dave, list,
>
> Yes, that's quite true! And we are all greatly concerned about SAFETY,
> thus
> the rather curt "NO" in many (including mine) responses. And yes, we've
> seen this question many times before, and yes, we will continue to
> dissuade
> members from using VARIACs without isolation transformers.
>
> VARIACs are a good way to adjust line voltage. I've done it myself for
> testing a Vextra cw/ccw driver that wanted 100V. Long term solution is to
> use a bucking transformer in series with the primary.
>
> Alan KM6VV
>
>
>
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> bill
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Addresses:
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OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
bill
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