CAD CAM EDM DRO - Yahoo Group Archive

RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?

Posted by Andy Wander
on 2012-01-15 18:18:11 UTC
Yeah, that's what I understand, also. But 2A is plenty and more to kill you!


Andy Wander

-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of jchrisj7734
Sent: Sunday, January 15, 2012 7:22 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?

Forgive me of this has already been said, but my understanding of the voltage isolation issue is this:
If you compare a classic isolation transformer with a 1:1 turn ratio to a direct connection to the power line, both supply 110 VAC and you can get a shock from either or them.

Because the energy transfer in the transformer is through magnetic
coupling between the two electrically isolated coils the amount of current that the transformer can deliver is limited by the magnetic saturation of the transformer core. A 2 amp isolation transformer will only deliver somewhere in the vicinity of 2 amps. The power line, on the other hand, (or the input side of the isolation transformation for that matter) will deliver as much current as the power company can give you until the circuit breaker activates.

The Variac isn't isolated so you can get a lot more current through it that a regular transformer.

The isolation scenario works with step down transformers,too.

Chris

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@...> wrote:
>
> Hi Jeff:
>
> I appreciate the effort.
>
> But there are a couple of things that don't convince me still.
>
> For instance, to use your analogy, why is the "red" water more dangerous than the un-colored water?
>
> And I don't think it is correct to say beg to differ that you can't get a shock by touching a single wire from an isolation transformer. The chances are good that you will not get a shock, by completing a circuit to ground, but by no means absolute. The output of the "ungrounded" isolation transformer WILL have some potential with respect to ground-and you don't know what it is.
>
>
>
> Andy Wander
>
> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Jeffrey T. Birt
> Sent: Saturday, January 14, 2012 11:16 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?
>
> Sorry Andy, I'm really trying to be helpful but trying to explain this type
> of thing over email is not very effective.
>
>
>
>



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Discussion Thread

imserv1 2010-03-27 14:34:20 UTC Remember Mr. Bill's servo lite? Dan Mauch 2010-03-28 07:42:45 UTC Re: [CAD_CAM_EDM_DRO] Remember Mr. Bill's servo lite? Dan Mauch 2010-03-29 07:07:06 UTC Re: [CAD_CAM_EDM_DRO] Remember Mr. Bill's servo lite? mikep_95133 2012-01-12 12:23:58 UTC Re: Remember Mr. Bill's servo lite? Dan Mauch 2012-01-12 13:47:49 UTC Re: Remember Mr. Bill's servo lite? Dan Mauch 2012-01-12 13:51:43 UTC Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-12 19:45:22 UTC Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-12 19:46:29 UTC Re: Remember Mr. Bill's servo lite? picengraver 2012-01-13 14:48:56 UTC Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-13 18:02:29 UTC Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-13 18:25:03 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Phil@Y... 2012-01-13 20:29:13 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-14 09:46:27 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 10:53:26 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? robin 2012-01-14 11:08:30 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-14 11:12:18 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 11:18:37 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Henrik Olsson 2012-01-14 12:15:26 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-14 13:13:22 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 15:00:04 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 15:03:58 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Tom 2012-01-14 15:46:40 UTC Re: Remember Mr. Bill's servo lite? nowitstaken 2012-01-14 17:04:40 UTC Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-14 18:21:20 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 18:57:00 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 19:28:58 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-14 20:28:05 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-14 20:33:46 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 20:34:37 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-14 20:39:52 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Roland Jollivet 2012-01-14 21:50:48 UTC [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Peter Homann 2012-01-14 22:16:13 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? robin 2012-01-14 23:45:36 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-15 01:23:50 UTC Re: Remember Mr. Bill's servo lite? Dan Mauch 2012-01-15 05:48:04 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Dan Brewer 2012-01-15 05:48:07 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Jeffrey T. Birt 2012-01-15 05:48:38 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Mike Snodgrass 2012-01-15 05:49:08 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 09:42:43 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 09:43:29 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 09:51:23 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 09:52:20 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 09:57:31 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-15 11:15:07 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-15 11:23:50 UTC Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-15 11:30:33 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-15 12:00:05 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 12:49:13 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 12:51:06 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 12:58:50 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? jchrisj7734 2012-01-15 16:22:30 UTC Re: Remember Mr. Bill's servo lite? Steve Blackmore 2012-01-15 17:27:13 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 18:18:11 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-15 18:23:01 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Dan Mauch 2012-01-16 03:26:40 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-16 08:53:29 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-16 08:57:26 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-16 09:06:20 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-16 09:12:14 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? bulshatar 2012-01-16 11:43:43 UTC Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-16 11:50:43 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? mikep_95133 2012-01-16 14:00:07 UTC Re: Remember Mr. Bill's servo lite? David G. LeVine 2012-01-17 19:44:50 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? Andy Wander 2012-01-17 20:50:33 UTC RE: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite? picengraver 2012-01-18 02:43:44 UTC Variacs - WAS: Re: Remember Mr. Bill's servo lite? robin 2012-01-18 17:30:26 UTC Re: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?