D
Dave Plowman (News)
I've yet to see an unmarked multi-pair cable.
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I've yet to see an unmarked multi-pair cable.
B
bz
Bet you got a 'buzz' out of that.
--
bz 73 de N5BZ k
please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.
[email protected] remove ch100-5 to avoid spam trap
W
Wolfi
Am 03.07.07 22.52 schrieb Spurious Response:
Good luck plugging in a switchable 1200/1500W electric room heater, when 1200W
just don't warm enough or a fix power 1350W type or a decent µ-wave.with 1kW
or 1.1kW *output* power, sucking about 1.5kW out of the wall.
Good luck plugging in a switchable 1200/1500W electric room heater, when 1200W
just don't warm enough or a fix power 1350W type or a decent µ-wave.with 1kW
or 1.1kW *output* power, sucking about 1.5kW out of the wall.
S
Spehro Pefhany
Who wants to be forced to use a puny 1500W appliance such as an
electric kettle?
3,000W gets the job done fast.
Best regards,
Spehro Pefhany
E
Eeyore
Spurious said:
What are those rates ?
Graham
S
Spurious Response
It may have been individual twisted pair runs to each room.
T
Thomas Tornblom
Spurious Response said:
It takes the same amount of energy to boil a quantity of water whether
you're using a 1 kW or 3 kW kettle. Infact it would probably take less
energy with the 3kW kettle as it gets the job done quicker, which
means less losses.
Agreed, but you can't really save on a kettle, unless you switch to
some alternate energy source.
Not an appliance, and in Sweden, not Japan, but I have lowered my
hosehold energy consumption from 40+ MWh annually to around 18 by
converting from direct electrical heating to a rock heat pump, and
paying attention to the consumption of appliances.
I have a 200 m drilled collector in my back yard that feeds the heat
pump. The collector is also used as a source (drain?) for cooling in
the summer. One only needs to pump the +8° brine coming from the
collector through a few convectors, no need to run any compressor.
I'm currently installing the air conditioning parts of the system,
which when finished will provide about 10 kW of cooling power for about
300 W of input power to run a brine pump and the fans in the
convectors. Theoretically it will also warm up the collector slightly,
which improves winter operation, but that is marginal, if any.
Oh, and while were talking about electrical systems, domestic feeds in
Sweden are almost universally 400V three phase.
My main fuses are 25A. When we bought the house in 1987 it had 20A
fuses, and electrical heating. One of the main fuses would
occasionally trip in the winter when the washer and stove was used,
while the radiators were running on full blast. Switching to 25A fuses
solved that. After the heatpump conversion I can most likely go back
to 20A fuses and save some on the electrical bill.
When we bought the house, the stove, washer, dryer, boiler and sauna
were all wired for three phase 400V operation. The radiators were 400V
two phase. The new washer and dryer are single phase 230V units, and
we've ripped out the sauna and the heatpump produces the hot water, so
the stove and heatpump are the only remaining three phase consumers.
P
Paul Burke
Spurious said:
Apart from the fact that the energy used in a more powerful kettle is
slightly less, the rates in California appear to be about 12-15c/kWhr,
compared with my UK rate of 9p (~18c). The big difference in costs here
is that the climate is such that we don't need (and most of us don't
have) air- conditioning.
Paul Burke
The problem is transmittable, thus only one bad socket was needed for
the problem to occur and spread to the others. So good sockets went
down too.
The way it occurs is one bad contact occurs, the plug pins get
damaged, and when damaged pins are inserted into a good socket, bad
contact occurs due to copper oxide and a rough surface. So the good
socket is damaged. Plug something else into it, that plug gets damaged
etc.
Slow process, but have seen it happen. AFAIK its the only electrically
transmissible disease
Nowt wrong with round pins. The problem is that some of the older
sockets didnt implement contact springing, either at all or
effectively. Sometimes the split plug pin was the only sprung part,
which is no good at all on 15A 3 pin plugs.
NT
Wrong way round. A 3kW kettle takes less energy to boil a given amount
of water, not more. The energy required to heat the water (and nothing
else) is the same regardless of power, but the heat losses are larger
with a 1kW kettle, since it takes apx 3x as long, losing about 3x as
much heat to the air.
NT
B
bz
Thomas Tornblom said:
How would going to 20A fuses save some on the electric bill?
--
bz 73 de N5BZ k
please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.
[email protected] remove ch100-5 to avoid spam trap
T
Thomas Tornblom
bz said:
There are two parts to the bill, one consumption part, which obviosuly
is not affected by this, and then a fixed part, which is dependent on
the installed main fuse. The weaker the fuse, the less the fixed part
is.
When we moved in there was different tariffs for 16, 20, 25, 35A, but
after a few years they dropped the 16 and 20 A tariffs. Now they are
reinstating them.
It will increase the fixed part by about $150 a year, which is not
enough for me to bother. I rather not have to get out and replace
blown fuses.
Thomas
J
John Larkin
We pay a sliding scale for electricity here in San Francisco, from
about 10 cents to as much as 22, nonlinear on consumption, to
encourage saving. But we gat our heat and cooking from natural gas,
and don't have a/c. At 7 AM, July 5, the forced-air heat is on. We pay
more for gas than for electricity, maybe $200 a month total for both.
John
R
RoyalHeart
Joel said:
Conduit is used where there is a problem with critters (squirrels, rats,
and the like) chewing on exposed wiring. I am upgrading the 100A service
to 200A in my house, and running EMT in the attic and fishing flex down
the walls to the switch and receptacle boxes for this reason.
Thomas
M
Michael A. Terrell
bz said:
Actually, all the speakers were 25 volt line, so I used a McMartin
background music receiver to find the speakers
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
M
Michael A. Terrell
Spurious said:
Some of the speakers were over 1000' from that junction box and down
multiple turns in the hallways.
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
M
Michael A. Terrell
Dave Plowman (News) said:
Where did I say it was multi-pair? I said that it was over 50
pairs. Shielded multi-pair audio cables wasn't being used for school
intercoms when this system was built, and the architect's specs called
for stranded 22 AWG Alpha twisted pair, shielded cable with a plastic
jacket. If it was multi-pair, there would be no need to tag the
individual pairs, would there?
I DID use 66 series 25 pair terminal blocks to rewire that cabinet,
so you could flip out a couple bridging clips to troubleshoot the
wiring.
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
M
Michael A. Terrell
Wolfi said:
What part of "Dedicated circuit" don't you get?
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
G
Gary Tait
No, we have been mostly talking of the merits of the UK BS1363 vs the
typical US NEMA 5-15, with a noted tangent on other plugs around the world,
and outside of the typical ones in the US/UK.
G
Gary Tait
Being as they have 100V service (rather than 120V, or 240V), they use lower
wattage appliances. I don't know how they handle high power.
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