Electronics Forum / Electrical Engineering / May 2006

Dear Gentlemen;
I am electrical engineer here in U.A.E. Please give me in detail what
are the advantages of 220kV/33kV and 220kV/66kV against 132kV/11kV and
132kV/33kV substations. Send also the physical dimensions of each

QN: do I have a bad PDU?
Symptoms:
3  servers, each connecting to 2 PDU's via dual power supplies.
Each PDU was showing 6.3 A load. (15 A max.)

I'm looking for the name of a device that you put between a outlet and
electric item and this device only allows the item to use the  "juice"
needed. Thanks for your help, I appreciate it.

I live in an old apartment and am installing a dimmer switch for the
dining room- When I pulled the plate off the old light switch I see
that there is no existing ground.  The new switch I bought from the
store obviously comes with a ground.  My question- what do I do with

Most light bulbs hum loudly when dimmed via a dimmer switch.  A few are ok,
because they contain extra filament supports at critical positions.
My hanging (swag) kitchen tiffany-style light takes a G40-150w bulb.  It
hums badly when dimmed.

I have taken over the PA Testing for a building company I work for. They
currently have a basic Parker Bell PAT, which probably covers the basic
testing but I don't feel is very thorough. It passed an appliance which
would run slowly and emit smoke. An extreme case and probably ...

At work we have a walk in freezer, approx 4m by 3m in area. It is
currently illuminated by light fitting with a 60W GLS lamp, which, of
course doesn't last long.
I have had a web-trawl to look for lamps which would operate for

I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:

hey does anyone actually use this or what

Quartz AA Clock Movements Set With Poiters.
The movement is approximately 2 1/8 " x 2 1/8" x 1/2"
Which makes it suitable for a wide variety of clock styles.
Items Price : $3

We have an Industrial plant with primery voltage 33KV and secondry 6KV and
th-ry voltage 400V .
I want to calculate short circuit current.
It means that i should to know equal Impedance of all circuits.

I have a question that maybe this group can awnser for me.
I plan to install a server room in a new building in the near future.
My main location however is 10 ft away from the building power breaker.
The question being will the high level of voltage affect the servers i

I would like to buy a microwave here in Canada to send to Tehran, Iran.
I know that the power is 220 Volt, 50 Amp.
I have a few questions I'm hoping this group can help me with:
1) Will a step down transformer (power converter) work well with a

I posted this in alt.home.repair but I thought I'd ask in a more
specific newsgroup as well..
I'm adding two double pole 20A 12-3 wire circuits to my breaker box for
my basement.  Each of the two 12-3 runs is split into two 110v circuits

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