Electronics Forum / Electrical Engineering / June 2007

I'm replacing a GFCI in a hot tub.  The unit looks like a regular
blank face GFCI except for some type of coil on the back that
several wires run through when it is installed.
Here's a picture:

Can power factor be different in each side of a generator transformer that's
connected to an infinite bus (grid)?
Example...
Generator at LV connected to a HV public utility grid via a step-up

This is mention in a book that I don't quite understand how it happens
"There are several disadvantages to mechanically switched
capacitors. ... If voltage collapse results in a systems in a system
breakup, the stable parts of the system may experience damaging

Lingerie is a term for women's fashion underwear. It derives from the
French word 'lin' for linen. While the term in the French language
applies to all underwears for either sex, in English it is applied
only to those women's underwears designed to be visually appealing or

Where I live, we pay a lump sum each month and then energy gets
cheaper as the total consumption gets higher. What is the reason
for this? I know that it's cheaper for the electric company if
you keep your consumption as steady as possible, but the pricing

This is mention in a book that I don't quite understand how it happens
"There are several disadvantages to mechanically switched
capacitors (here they are talking about shunt caps). ... If voltage
collapse results in a systems in a system

I am reading book about voltage stability, it mentions that with
applie of shunt capacitors,
overvoltage will happen at the stable part of the system as voltage
collapse results in system breakup.

ive lost my adaptor for my router. on the router, it says 10VDC 1A.
but i have another adaptor which outputs 12V 1A.
is it OK to use the adaptor for the router?

I read on a book that when a circuit has an AC voltage source as
the input then it's input resistance is
Ri= ui/ii
where ui is the instantaneous input voltage and ii the

On Jun 25, 8:24 pm, "John Campbell" <spaml...@spamless.com> wrote in
http://groups.google.com/group/sci.energy/msg/4823735b491cfe81?hl=en&

On Jun 25, 8:24 pm, "John Campbell" <spaml...@spamless.com> wrote in
http://groups.google.com/group/sci.energy/msg/4823735b491cfe81?hl=en&

Please don't be annoyed/offended by my question.
Paul Cardinale said that there is no higher limit to the frequency a
carrier wave can transport -- regardless of the carrier wave's
frequency.

What it mean that skin effect ratio in Bus Bars ( Both LV and HV
systems ) vendors are specifying that skin effect ratio = 1. Whether
it mean that when both AC or DC is conducted by that bus bar the
rating of the bus bar is same ?. Please clarify the above

My NipponDenso * has no fan / impeller to pull air into * to cool
*, so this * ( esp when heated by engine block ) gets too hot ( can
boil an egg ) in 33ºC air, output ( ampere & voltage ) drops too
low just as described in

I am reading book about voltage stability, it mentions that
overvoltage will happen at the stable part of the system as voltage
collapse results in system breakup.
Any one know why?