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can i use 300volt cable to wire a electric outlet?

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pete

Jan 1, 1970
0
can i use 300volt cable to wire a electric power outlet? i have some
leftoever cable and i dont wanna go buy some lower volt, it just to
plug a computer.
 
A

Anthony

Jan 1, 1970
0
can i use 300volt cable to wire a electric power outlet? i have some
leftoever cable and i dont wanna go buy some lower volt, it just to
plug a computer.

Um...an equally, or even more important question is what size is the
wire?...what is the current carrying capacity?



--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
better idiots.

Remove sp to reply via email
 
W

w_tom

Jan 1, 1970
0
It should be obvious from the tone of other responses that
your question is scaring people.
 
P

Palindr☻me

Jan 1, 1970
0
pete said:
can i use 300volt cable to wire a electric power outlet? i have some
leftoever cable and i dont wanna go buy some lower volt, it just to
plug a computer.

Now it really depends on the country you are in, its wiring regulations,
the nominal voltage of the power outlet, the type of cable (solid,
stranded,etc) and many other things.

For example, in Haiti, of course you may use this cable - but you will
need the correct accessories (called "furniture" in the UK). Drive your
car under the overhead lines near your property, put the table on the
roof of the car and the chair on top of that and climb up. Although
heavy duty alligator clips are best, you can get a good enough
connection by striping about 18" of the insulation off your cables and
wrapping the bare end tightly around the overhead wires. Anytime during
the day is normally fine but you should avoid the hours between 3 and
7am as power may come on. This can easily kill, in spite of the
insulating qualities of wooden tables and chairs. Tie an odd bit of rope
to the power line and to your cable, to act as strain relief. You need
to disconnect the line that your builder put in under the floor screed
that connects in to your neighbour's metered supply. That will no longer
be needed. Ideally, insulate the end of this line as it will be live
when your neighbour has power. Chewing gum is normally used as the
insulation, but several coats of paint is probably as effective. 300volt
cable sounds fine as normally bare wires are used, held apart by odd
bits of tree branch and string. Whilst you are up on the chair, it is a
good time to connect to the telephone wires and cable television service
that mare typically strung between the same power poles. Your 300v cable
will be fine for this too. Don't mix the wires up as trying to run an
air conditioner off the telephone wires is rarely successful (you may
find a neighbour has made this mistake in reverse, so you may find that
the air conditioner runs fine, but the telephones just buzz and
self-illuminate).Note that if power does come on whilst you are doing
all this, you may find that the "electric chair" is not a new invention..

Hope that helps! However, should you not be in Haiti and care to give a
little more of the detail I mentioned at first, you may get more useful
information...
 
P

Palindr☻me

Jan 1, 1970
0
|>From: pete [email protected]
|
|>can i use 300volt cable to wire a electric power outlet? i have some
|>leftoever cable and i dont wanna go buy some lower volt, it just to
|>plug a computer.
|>
|
| Romex is 600 volt rated, what "lower voltage" wire did you have in mind?

There is cable available that looks and feels like Romex, and as far as I
can tell would be classified as NM cable, but which is rated 300 volts.
Obviously you wouldn't want to use it on a 480 volt circuit. But why not
on a 240 volt circuit as long as it was listed and of the correct type for
the installation to be done?

I had this strange idea that 240v ac actually went a tad above that
during parts of the cycle...

A tad being what remains of a tadpole that was sitting on a 300V peak
rated cable with 240V ac going through it, on a wet day...painful,
especially for a boy tadpole.
 
R

Roy Q.T.

Jan 1, 1970
0
That sh_t is wild., I saw that on TV };-)

Wires Everywhere Not only Haiti it's a freakin Shameful Mess even in
Spain they don't know how to bring it into code because the violations
out number the coded jobs.Talk about Ghetto Living the careful ones
throw in a Breaker or two in the mix...

Cave Dwellers what can you do?

If You Are in Haiti or Spain Mountanous Region : My suggestion is since
only 120vac is available (hopefully) to you, untanlge & pull out half of
the strands, this should be good for at least 150vac and use the other
half for another power outlet tap.... use method suggested by Sue.

If you are in any other place in the free world check & since it's onlt
for a computer see if the cable says no.12 awg or no.10 awg and use it
in good faith accordingly. NOTE [always tap off a bigger awg wire not
from a smaller awg]

Roy Q. T.

~ Ghetto E.E.Technician ~ for now;)
 
P

Palindr☻me

Jan 1, 1970
0
| [email protected] wrote:
|>
|> |>From: pete [email protected]
|> |
|> |>can i use 300volt cable to wire a electric power outlet? i have some
|> |>leftoever cable and i dont wanna go buy some lower volt, it just to
|> |>plug a computer.
|> |>
|> |
|> | Romex is 600 volt rated, what "lower voltage" wire did you have in mind?
|>
|> There is cable available that looks and feels like Romex, and as far as I
|> can tell would be classified as NM cable, but which is rated 300 volts.
|> Obviously you wouldn't want to use it on a 480 volt circuit. But why not
|> on a 240 volt circuit as long as it was listed and of the correct type for
|> the installation to be done?
|
| I had this strange idea that 240v ac actually went a tad above that
| during parts of the cycle...

You mean 339.4112549695428117124052938103275388567212500904675375624 volts?

I've always understood these ratings to be volts RMS. Otherwise they would
have a problem using 600 volt rated wire on 480 volt circuits where the peak
is 678.8225099390856234248105876206550777134425001809350751248 volts.
I agree that ratings are normally RMS but would you like to
advise the OP to go ahead without knowing exactly what cable
he does have and whether it is peak or RMS rated? I
certainly have loads of peak-rated cable lying around - I am
just looking at a piece..

Wowo that's some accuracy! I'll take your word for the
figures as going to Milliways to get that kind of voltmeter
(and S/N ratio) is a bit over my budget..
 
R

Ron & Joan

Jan 1, 1970
0
|>can i use 300volt cable to wire a electric power outlet? i have some
I had this strange idea that 240v ac actually went a tad above that during
parts of the cycle...

In Canada we typically use Loomex (NMD90) which is a 300v rated cable.
We use it for 120 and 240 volt circuts.
I'm under the impression that the cable ratings are peak voltages, but as
compared to ground.
This means that it can easily handle the 170v peak that 120RMS has to offer.
Since a 240V circuit is made up of two 120V phases at 180 degrees apart, it
will work fine for that also.
 
O

operator jay

Jan 1, 1970
0
| |
|>
|> Sometimes I use this number for square root of 3 for 3 phase calculations:
1.73205080756887729352744634150587236694280525381038062805580697945193301690
| 88
|>
|> --
|> -------------------------------------------------------------------------
-
| ---
|> | Phil Howard KA9WGN | http://linuxhomepage.com/
| http://ham.org/ |
|> | (first name) at ipal.net | http://phil.ipal.org/
| http://ka9wgn.ham.org/ |
|> -------------------------------------------------------------------------
-
| ---
|
| Please tell me you do not have the number memorized :)

Not all of it. I have 1.732050807568877293527 memorized.

My calculator can't even remember that good :)

OK, here's more fun:

This 75 digit whole number:
420822285988227013720711574118074336914384010263943969060896115315462167322
divided by this 75 digit whole number:
242961860096296544907724714389663833398700110484439858140580763196256187919
gives the square root of 3 to an accuracy of 150 digits.

You can square both numbers and see that the ratio of those squares is 3.
But unlike just picking an arbitrary N digit number and multiplying by an
2*N digit square root of 3, you don't automatically get another N digit
number that can return the 2*N digits of the square root of 3 when divided.
Whole number ratios that good are very rare. Same goes for PI (I have a
14593 digit whole number divided by another 14593 digit whole number that
yields PI to an accuracy of 14593+14593+4 digits).
http://ka9wgn.ham.org/ |
 
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