Re: electricity in Israel?

On Sun, 19 Jul 2009 23:37:03 +0000 (UTC), Paul S Wolf
<paul.s.wolf@xxxxxxxxxxxx> wrote:



I've observed that most homes in Israel have timers built in to the main
electric circuit box that can be set to turn lights off in various parts
of the house at different times on Friday evening, and back on on
Saturday. For example, in my daughter's home, one circuit turns off the
lights in the bedrooms at 8:00 pm, and a different circuit turns off the
lights in the living room, kitchen, & dining room at 11:00 pm. The
lights in the bathrooms/lavatories stay on all night. They also use a
timer to turn on and off the power to a "plata", used to reheat the food
for lunch and dinner. (In fact, we have one in Cleveland, too) I wish
US homes had such timers built in to the mains.

According to what a guy on home repair told me, the boxes are the
equivalent of electric junction boxes and can't be any smaller than
the minimum size for them. Still, I would think the box behind a
toggle switch would be the minimum size, but i haven't found a timer
that small. I guess the only demand is from people with water
heaters, swimming pools, and Jews, and the first two are not so short
of space.

Here's another one
http://www.drillspot.com/products/77103/Paragon_7007-00_Electromechanical_Indoor_7_Day_Timer

It's 170 dollars but it has a 4 pole switch, 40 amps, which I believe
is 40 amps per pole. This means you can control two circuits at the
same time (albeit with the exact same timing) and probably 4 circuits
at the same time.

It's a Paragon. Up until now, I've only found Intermatic. Paragon
seems to make timers for swimming pools

OTOH, a problem with turning off the whole circuit is that digital
clocks will either lose track of time or run down their backup
batteries. Mechanical clocks will run hours slow, getting slower
every Shabbes. Televisions and converter boxes and cable boxes, at
least maybe some of them, may lose track of the scanned stations, or
the internal clock. DVDR's at least mine, will lose track of what
programs they are to record.

How do Israelis handle these things? Do they only turn off ceiling
lights and one receptacle per room? Leaving the other receptacles for
the things that will lose time or memory if power is removed. Most
housing in the US made in the last 40 years doesn't have ceiling
lights in bedrooms or living rooms. I put such lights in two of my
bedrooms. They are on the same circuit, which also powers the
workbench in the basement and the light in the attic and roof fan.
One new circuit for everything I wanted to add. It's hard to
rearrange this stuff after a house is built. But all of my new stuff
was either in the basement or the unfinished attic.


But if you want the timer, here's more about this one.

* 7-Day Electromechanical Timers
* Allow precise time-of-day scheduling with 7-day dial and manual
override lever.
* Timers allow different settings for each day of the week. Day
skipper adds the flexibility of omitting any day or days from the
program. UL Listed and CSA Certified.

* Heavy-duty clutchless gears prevent slipping
* Contacts are tungsten-rated to handle inrush currents 10 times
their rating

* Paragon
* Self-lubricating, synchronous motors.
* Snap-out timer mechanism is housed in a gray-finish enclosure
with knockouts and lock hasp.

Electromechanical Indoor 7 Day Timer, Contact Form 4PDT, Normally
Open**, Timer Input Voltage 120, Maximum Time Setting 21 Hours,
Minimum Time Setting 3 Hours, Number of Trippers Included 14, Maximum
On/Off Cycles 4, Contact Power Rating @ 120VAC 1 HP, Current Rating 40
Amps, Day Skipper, Enclosure Type Steel Indoor, Length 11.4 Inches,
Width 7.4 Inches, Depth 3.6 Inches


If it's really double throw, it's both normally open and normally
closed, so I don't know what they mean by normally open. In
addition, one can use the cams to keep it in the abnormal position
most of the time, so I'm not even sure what normally means. These are
toggling switches, not momentary switches or momentary relays, so I
don't get it. But it's still a good product.

And this one:
http://secure.poolcenter.com/prodinfo.asp?number=4001-00M

--
Paul S. Wolf, PE, FITE mailto:paul.s.wolf@xxxxxxxxxxxx
Fellow, Institute of Transportation Engineers

.

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