Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications
(w) 303-706-5467
(c) 303-204-2974
(t) 3032042...@vtext.com
(e) charles.gra...@echostar.com
(e2) chasgra...@gmail.com
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This message is from the IEEE Product
Note the DOE issued draft guidance stating that all EPS that is capable of
operating a consumer product would be considered in scope even if the EPS was
not sold for the purpose of operating a consumer product. It also goes on to
suggest that if the EPS has an identifiable design
Peter,
The idea of a 208 V split phase is unusual and probably not the case here.
The number 208 is obviously derived from a three phase system.
I believe the system you are talking about is a red-leg or high-leg three
phase system. Wikipedia does have a good review in this case (
Good morning.
There are oftensmall, legacy grids that you come across or hear
about.
I was recently told that some areas of the Northeast US have a 208
V, split-phase power system to some residences and small businesses.
Still 180° phase-to-phase and presumably 104 V phase-to-Neutral. A
Although I agree with Doug in general, I will note that Massachusetts has 40
independent municipally owned electrical utilities. I have no evidence of 104
VAC supply, but it is possible that one of the 40 utilities supports an unusual
legacy system.
Brian,
Any significant impedance differences between these two supply configurations?
Brian
Sr Burrito Quality Control Engineer
-Original Message-
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Wednesday, October 21, 2015 12:34 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re:
When I had that same task, I just bought a several kW Variac, connected it
across the 208 VAC phase of a 3-phase feed, and used the Variac to increase
the needed 5% or so. A big fan for the Variac can be cheaper than buying a
really big Variac.
Ed Price
WB6WSN
Chula Vista, CA USA
I've never heard of a Utility Company providing 208 "split-phase".
I have heard the term "208 split-phase" many times from our customers who claim
to have this but in reality what they have is 208 3-phase wired into a 230V
split-phase receptacle but only using 208 Phase to Phase with the
Doug –
I’m not certain what I’m referring to. Hence the question. Since typical
120/240 V split-phase distribution in the US is from a center grounded
delta, my inclination is to believe this follows that same method. Or the
original proposition I received is incorrect and a three-phase WYE
Brian of the nonburrito ilk -
This is usually called 208 V single-phase.
I'm still trying to clarify the specifics of the request.
Peter Tarver
> -Original Message-
> From: Kunde, Brian
> Sent: Wednesday, October 21, 2015 12:34
>
> snip <
>
> I have heard the term "208 split-phase"
Peter,
"208 V single-phase" is the correct term but when people uses the grounded
neutral to drive 120V circuits then they often refer to it as "208
Split-Phase". It really isn't "split-phase" unless it is derived by a center
tapped transformer secondary. But in most cases it works, so why not
Been there, done that with the fan too in order to test at +10%.
-Dave
From: Ed Price [mailto:edpr...@cox.net]
Sent: Wednesday, October 21, 2015 4:11 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] 208 split-phase?
When I had that same task, I just bought a several kW Variac, connected it
Dear colleagues;
I understand that this question is slightly off topic but someone might know
the answer.
For USA level VI energy efficiency regulations, are power supplies intended for
professional use only included within the regulations or can they be exempted?
Many thanks in advance.
Ian
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