[vcf-midatlantic] Off topic-testing 3 phase power

[Jason Perkins]

Any good multimeter should be fine for this. You could measure phase to
phase voltage, and check frequency.

I have a mid range Fluke meter which could do this test easily (I recall it
can measure 1000v)

-J

On Mon, Jul 10, 2017 at 2:01 PM, Ben Greenfield via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

>
>
> ---------- Forwarded message ----------
> From: Ben Greenfield <ben at cogs.com>
> To: vcf-midatlantic <vcf-midatlantic at lists.vintagecomputerfederation.org>
> Cc: Herb Johnson <hjohnson at retrotechnology.info>
> Bcc:
> Date: Mon, 10 Jul 2017 14:01:01 -0400
> Subject: Re: [vcf-midatlantic] Off topic-testing 3 phase power
> Hey Herb,
>
> The only thing I can say in my defense is that one can be both naive and
> have respect for electricity.
> As for a professional, I have one involved. Unfortunately my natural
> curiorsity keeps me from being passive during integration of this project.
>
> I could have gotten into all sorts of esoteric details about what I’m
> really trying to troubleshoot but I really wanted a simple answer, which I
> got from Bill Dudley. Bill’s answer was simple and re-enforced my beliefs
> on the subject.
>
> Regarding testing equipment. I believe the Fluke I referenced was proper
> testing equipment and I wanted to see what others thought. I included a
> link to it’s page it is rugged 4 channel 100 Mhz portable oscilloscope.
> This looks like the ultimate tool for this type of work and I wanted to
> know what other’s thought.
>
> http://en-us.fluke.com/products/portable-oscilloscopes/fluke-190-ii-
> portable-oscilloscope-190-104.html
>
> I followed list guidelines by marking the post off-topic. I felt it was a
> fair question in a hacker environment and I thought others may have first
> hand experience they could share.
>
> I was satisfied with answers I did receive and I love that the list exists
> as resource for hacking questions for all sorts of technology.
>
> Thanks,
>
> Ben
>
> > On Jul 10, 2017, at 12:45 PM, Herb Johnson via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
> >
> > Ben Greenfield has asked about testing a 50Hz 400 volt 16 amp outlet.
> >
> > Without going on about it: something in Ben's request, doesn't feel
> "right". This is a dangerous circuit. I don't give public advice about
> things that put people at risk.
> >
> > Ben, consult with a local qualified electrician, about whatever you have
> in mind. If such circuits are unfamiliar to you, if you don't have
> appropriate LINE TESTING test equipment -  get someone who IS familiar and
> local and qualified.
> >
> > Herb Johnson
> >
> > --
> > Herbert R. Johnson, New Jersey in the USA
> > http://www.retrotechnology.com OR .net
>
>
>


-- 
Jason Perkins
313 355 0085