Alternative Power sources - 208 vs 240, was: Energy Worries In Ontario Canada?

Author

208 vs 240, was: Energy Worries In Ontario Canada?

danny burstein

2006-01-22, 4:21 pm

In <o_OdnY7oCp8UQ07eRVn-tA@golden.net> "Solar Flare" <sfl@hutmail.notvalid> writes:

>Our town decidedly allows 125/216 volts as an
>acceptable compromise of both voltages on residential
>customers where load density is high. (called "Network"
>services) It reduces the amount of copper usage in
>large apartment buildings etc..

>208 volts is for three phase appliances that are
>usually designed for that voltage.

What I've seen plenty of times in NYC (and which
is often in other parts of the country...)

Modest sized apartment building gets a three
phase circuit from the utility. The apartments
get two "hot" wires and a neutral (plus safety ground),
in a skip-over arrangement. That is, the first
unit gets legs A and B, the next one gets B and C,
the third gets A and C. Rinse, lather, repeat.

(All three hot legs go up to the elevator motor
and any rooftop central air conditioners, etc.).

So... each apartment can pull 120V (a hot
leg to neutral), and... can match up two
hot legs and get 208V (in place of 240V).

Again, while many 240V appliances will
work ok at the 208V level, many suffer
from it, with issues ranging from minor
performance (such as an oven which takes
a few minutes longer to warm up, but is ok
once it reaches operating temperature) to
more serious concerns.

>"danny burstein" <dannyb@panix.com> wrote in message
>news:dr0g8c$gmb$1@reader2.panix.com...
><nobody@devnull.spamcop.net> writes:
>phase
>work
>more
>nominal 240V,
>percent.
>encoded]

--
_____________________________________________________
Knowledge may be power, but communications is the key
dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]

Solar Flare

2006-01-22, 4:21 pm

Yes, and we design it at 125/216 volts. The
transformers say "125/216 volts" by design, nominal. It
is called "Network" in North America. You will see the
words "Network" on the electric meters.

208 volts is too close to the N.American tolerances and
leaves no room for voltage drop or error.

Still the same evil, just not as nasty.

"danny burstein" <dannyb@panix.com> wrote in message
news:dr0ncs$nmg$1@reader2.panix.com...
> In <o_OdnY7oCp8UQ07eRVn-tA@golden.net> "Solar Flare"
<sfl@hutmail.notvalid> writes:
>
residential[color=darkred]
"Network"[color=darkred]
>
>
> What I've seen plenty of times in NYC (and which
> is often in other parts of the country...)
>
> Modest sized apartment building gets a three
> phase circuit from the utility. The apartments
> get two "hot" wires and a neutral (plus safety
ground),
> in a skip-over arrangement. That is, the first
> unit gets legs A and B, the next one gets B and C,
> the third gets A and C. Rinse, lather, repeat.
>
> (All three hot legs go up to the elevator motor
> and any rooftop central air conditioners, etc.).
>
> So... each apartment can pull 120V (a hot
> leg to neutral), and... can match up two
> hot legs and get 208V (in place of 240V).
>
> Again, while many 240V appliances will
> work ok at the 208V level, many suffer
> from it, with issues ranging from minor
> performance (such as an oven which takes
> a few minutes longer to warm up, but is ok
> once it reaches operating temperature) to
> more serious concerns.
>
>
outlet[color=darkred]
will[color=darkred]
pull[color=darkred]
_____________________________________________________[color=darkred]
key[color=darkred]
rot-13[color=darkred]
>
>
> --
> _____________________________________________________
> Knowledge may be power, but communications is the key
> dannyb@panix.com
> [to foil spammers, my address has been double rot-13
encoded]

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