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

Romex is 600 volt rated, what "lower voltage" wire did you have in mind?

pete wrote in news:v3o0011nvgfrn9hekjev5mphsrl75ueku2@

4ax.com:

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

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...

|>From: pete snipped-for-privacy@dea.gov | |>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 suspect such cable is just a bit cheaper.

Of course, what kind of cable it is the OP has in hand is really unknown. There are lots of kinds, like flex cord, that he should not be using. And as others have mentioned, the ampacity is of concern.

What voltage rating of cable would you use on an actual 600 volt corner grounded delta system?

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.

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;)

| snipped-for-privacy@ipal.net wrote: |> On 02 Feb 2005 05:44:17 GMT Greg wrote: |> |> |>From: pete snipped-for-privacy@dea.gov |> | |> |>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..

On Thu, 03 Feb 2005 15:43:09 +0000 Palindr?me wrote: | snipped-for-privacy@ipal.net wrote: |> On Wed, 02 Feb 2005 19:21:57 +0000 Palindr?me wrote: |> |> | snipped-for-privacy@ipal.net wrote: |> |> On 02 Feb 2005 05:44:17 GMT Greg wrote: |> |> |> |> |>From: pete snipped-for-privacy@dea.gov |> |> | |> |> |>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..

Sometimes I use this number for square root of 3 for 3 phase calculations:

1.7320508075688772935274463415058723669428052538103806280558069794519330169088

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.

1.73205080756887729352744634150587236694280525381038062805580697945193301690 88

|> Sometimes I use this number for square root of 3 for 3 phase calculations: |>

| 1.73205080756887729352744634150587236694280525381038062805580697945193301690 | 88 |>

|> -- |> -------------------------------------------------------------------------- | --- |> | Phil Howard KA9WGN |

| | |> | (first name) at ipal.net | | | |> -------------------------------------------------------------------------- | --- | | 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).

calculations:

1.73205080756887729352744634150587236694280525381038062805580697945193301690

|> -------------------------------------------------------------------------

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|> -------------------------------------------------------------------------

- 420822285988227013720711574118074336914384010263943969060896115315462167322 242961860096296544907724714389663833398700110484439858140580763196256187919

| Interesting math tidbits. You seem to have a thing for decimal places, | particularly where the square root of three and correlated voltage levels | are involved. What do you think?

I think you are observant.

If you wanted to have a 3 phase voltage system with round (in base 10) voltage values, you could have chosen: 780/450, 450/260, 260/150

The math trivia covers more than the square root of 3. I'm doing some math and arithmetic in what is known as a "Stern-Brocot number space". This number space makes it easy to find excellent whole number ratios of various values. Google for "stern brocot" (using the quotes for a more effective search).

Golden ratio: = 62232491515607091882574410635924603070626544377175485625797 / 38461794961234640015759308940939757590587318989278841661816

Square root of Golden Ratio: = 29092373708768770130243485729628964946564802978731260340675 / 22871009673382406906546658911852163374536674824442327592993

PI: = 79507571104335130096569228504275949372664771882748132013465 / 25308045908970559252436674555907596302709751571150858141206

Square root of PI: = 38627865796427955493130716820039350152146687018159795571719 / 21793439517025307440592073273920208957072777794038852880478

E: = 13823891428306770374331665289458907890372191037173036666131 / 5085525453460186301777867529962655859538011626631066055111

Square root of E: = 43227312742639301876066325480909824513974797552227491438021 / 26218690515397341039169639804840134932707380243404825061181

Square root of 2: = 62652808582696914781730248640013068708177052998371059959476 / 44302225809207714047802677511548402965313235415702533504483

Square root of 3: = 70490083924305003488830123724941964647594825753487112986013 / 40697468928896805456782405151031131025497663867125756548082

Square root of 5: = 96154487403086600039398272352349393976468297473197104154540 / 43001594034989771874694756165454724275332884882536064794889