| David Combs 2006-12-27, 8:25 pm |
| In article <YYWdnY_RasT18PbYnZ2dnUVZ_qadnZ2d@comcast.com>,
Charles Schuler <charleschuler@comcast.net> wrote:
>
><joseph.hollyday@verizon.net> wrote in message
>news:1164662738.201732.58630@l12g2000cwl.googlegroups.com...
>
>The neutral (white) is a return ... it carries the same current as the hot
>wire (black). The ground wire is a non current-carrying safety wire (often
>bare copper). The purpose of the ground wire is to reduce voltages in the
>case of lightning or an accident (wires falling across other wires outside
>of your home and raising the voltage with respect to ground to a dangerous
>level). The ground wire only conducts current in the case of a fault.
>Ground fault circuit interrupters need the ground wire to detect such faults
>and open the circuit when they occur.
>
>People are often shocked and even electrocuted with voltages with respect to
>ground ... one is standing on a wet basement floor ... one is touching a
>faucet ... one is in the tub or shower. The voltage with respect to ground
>is the big issue here (for safety reasons).
>
>An ungrounded electrical system in your home would allow voltages to rise to
>thousands of volts above ground and fry you if you happened to be grounded
>(in a tub or standing on a wet concrete floor).
>
>
Are there one or more books that actually coverf
*this* kind of stuff, ie that's being discussed in
*this* thread?
Not some home-improvement book you might find at HD,
but something that really, tutorially, gets down to
the depth of *this* stuff, this "more complex" stuff
than you usually see covered in the home-improvement-style
electrical-books.
Something so that when you finish a subject, you really
understand it, not so that you can merely "do" some
home-job, but even would let you (correctly!, and usefully)
contribute to eg this current thread.
Ideas?
Thanks!
David
PS: eons ago I took some EE courses in college, but of course
that knowledge was pretty useless for this current subject.
|