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Watts and Electrical Connectors

11/16/2009 2:00 PM

I am trying to figure out how many watts an electrical connector can handle. I am not good with the formulas I have found on the web. I found a a connector that fits what I am looking for and they say it can handle 350 amps at 600 volts. How would I convert this to watts. Please do not give me a formula like Y x Z = W.

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#1

Re: electrical question from non educated person

11/16/2009 2:10 PM

Watts = Amps x Volts

600 volts*350 amps= 210 Kilowatts

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#2

Re: electrical question from non educated person

11/16/2009 2:21 PM

Okay, now that I have that. How many watts in a kilowatt?

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#7
In reply to #2

Re: electrical question from non educated person

11/17/2009 3:02 AM

<...How many watts in a kilowatt?...>

Eh?

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#14
In reply to #7

Re: electrical question from non educated person

11/17/2009 1:57 PM

kilo means 1000 ok!

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#20
In reply to #14

Re: electrical question from non educated person

11/21/2009 9:43 PM

Another good answer. Direct and to the point. Thank you

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#15
In reply to #7

Re: electrical question from non educated person

11/17/2009 3:32 PM

HI PWS,

It's obvious how many watts in a kilowatt, enough to KILL you!

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#3

Re: electrical question from non educated person

11/16/2009 2:36 PM

Hellow, Firstly I am not satisfied refering to you as a "non educated person" However watts is governed by formula.So if you want to understand watts,you must understand simple formulae.You will need to understand all the symbols that is used in the formula.

If you supply the following then I can calculate the watts.

Is your supply voltage AC orDC?

Is your supply voltage single Phase or three phase?

The 600 volts you indicated is the maximum operating voltage of the connector.

Iwant the operating voltage your connector will be handling. If you are using 3phase supply then you need to specify if the voltage you are providing is line to line or line to neutral.In other words ,tell me if you are giving line or phase voltage.

Regards

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#4

Re: electrical question from non educated person

11/16/2009 2:45 PM

210 killowatts is two hundered and ten thousand watts,a hell of a lot of power dont even go there if you have no electrical knowledge ..it will kill if you get it wrong

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#5

Re: electrical question from non educated person

11/16/2009 2:54 PM

On a connector, Watts are irrelevant anyway. A connector's rating has ONLY to do with Amps, not watts. So it is rated for 350A regardless of whether that is at 600V, 240V or 24V.

If all you know is the wattage of a piece of equipment, use the formulae to drive the amperage.

The voltage rating is MAXIMUM, but only by virtue of spacings etc. when installed as directed. It's not a good idea to use 600V rated connections on anything higher than 600V, but it has been done by "educated" people in the business.

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#11
In reply to #5

Re: electrical question from non educated person

11/17/2009 7:14 AM

That was a good answer. The current rating is the only thing that really matters here. One of the earlier responses also wanted to know if it was single phase or three phase. That is also irrelevant when it comes to Watts. Power is power is power, regardless or the voltage or phase.

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#6

Re: electrical question from non educated person

11/16/2009 3:24 PM

this is how you convert 350x600x1.73xPF/1000=290.64kw your power factor i make it .80 now check your voltage and power factor on the motor nameplate where you will going to install and re compute using the same formula by the way 1kw is 1000 watts ok

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#18
In reply to #6

Re: electrical question from non educated person

11/21/2009 9:30 PM

This is the answer I was looking for. Finally someone that understands that I, while not formally educated, knows to ask questions before trying to take an uncontrollable pee. Thank you.

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#8

Re: Watts and Electrical Connectors

11/17/2009 4:03 AM

Guys,

I know it's tempting to respond but I think Mr Reltub (Butler?) is taking the pee.

Perhaps he could tell us what he's attempting to connect (with such limited knowledge)?

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#9
In reply to #8

Re: Watts and Electrical Connectors

11/17/2009 4:57 AM

Anyone ever tell you how much you look like Einstein?

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#10
In reply to #9

Re: Watts and Electrical Connectors

11/17/2009 5:01 AM

No.

That's not really a picture of me, silly!

I look MUCH more like Einstein than that!

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#17
In reply to #8

Re: Watts and Electrical Connectors

11/21/2009 9:26 PM

Yep I was taking a pee. If that is your answer I don't need it. Thank you

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#12

Re: Watts and Electrical Connectors

11/17/2009 8:12 AM

I'm no genius, but if your dealing with that kind of power and have what appears to be very little knowledge about it, you should probably hire a professional. Your life is worth more that the cost of a trained professional. My 2 cents.

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#13

Re: Watts and Electrical Connectors

11/17/2009 9:42 AM

It seems from the original post, that this individual is looking for easy answers. I would be embarrassed, since he didn't try to figure it out!

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#19
In reply to #13

Re: Watts and Electrical Connectors

11/21/2009 9:38 PM

Embarrassed no. Alive yes. Some of you that answered understand that there is no stupid questions, just ones that need to be asked. After some of the answers that I have gotten here, I believe that there are more questions to be asked of the people that answer.

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#22
In reply to #19

Re: Watts and Electrical Connectors

11/21/2009 9:56 PM

Hi reltub,

No stupid questions no.

But, if it takes an 'apparently' stupid question to make a job or situation safe for the person doing it or other, then, keep those stupid questions coming!

Any, anyway, questions are stupid only to those that do not understand. People whom understand enough to ask advice ain't stupid, just wise!

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#23
In reply to #22

Re: Watts and Electrical Connectors

11/21/2009 10:05 PM

Thank you. Someone that understands, understands more than they know.

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#24
In reply to #23

Re: Watts and Electrical Connectors

11/21/2009 10:29 PM

Hi reltub,

Appreciate your reply!

Just to wipe my reputation out with one swipe...................... (What reputa????)

I can never understand more than I know, because, (wait for it!) I know to much!

But, what I 'know' and, what I can recall and make use of are, two very different quotients!

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#16

Re: Watts and Electrical Connectors

11/18/2009 4:54 PM

Hi reltub,

Here is a listed chart with everything from Deciwatt. But for most practical reasons a nanowatt will probably be the smallest unit you may need to refer to.

Check below.

[edit] Multiples

For additional examples of magnitude for multiples and submultiples of the Watt, see Orders of magnitude (power)

SI multiples for watt (W)
SubmultiplesMultiples
ValueSymbolNameValueSymbolName
10

–1 W

dWdeciwatt10

1 W

daWdecawatt
10

–2 W

cWcentiwatt10

2 W

hWhectowatt
10

–3 W

mW

milliwatt

10

3 W

kW

kilowatt

10

–6 W

µW

microwatt

10

6 W

MW

megawatt

10

–9 W

nW

nanowatt

10

9 W

GW

gigawatt

10

–12 W

pW

picowatt

10

12 W

TW

terawatt

10

–15 W

fWfemtowatt10

15 W

PWpetawatt
10

–18 W

aWattowatt10

18 W

EWexawatt
10

–21 W

zWzeptowatt10

21 W

ZWzettawatt
10

–24 W

yWyoctowatt10

24 W

YWyottawatt
Common multiples are in

bold face

[edit] Nanowatt

The nanowatt is equal to one billionth of a watt. From a single star of magnitude +3.5 a square meter receives one nanowatt.

[edit] Microwatt

The microwatt is equal to one millionth of a watt.

[edit] Milliwatt

The milliwatt is equal to one thousandth of a watt. A typical laser pointer might output 5 milliwatts.

[edit] Kilowatt

The kilowatt equal to one thousand watts, is typically used to state the power output of engines and the power consumption of tools and machines. A kilowatt is approximately equivalent to 1.34 horsepower. An electric heater with one heating element might use 1 kilowatt. The average annual electrical energy consumption of a household in the United States is about 8,900 kilowatt-hours, equivalent to an average power of about 1 kW.[2]

[edit] Megawatt

The megawatt is equal to one million watts.

Many things can sustain the transfer or consumption of energy on this scale; some of these events or entities include: lightning strikes, large electric motors, naval craft (such as aircraft carriers and submarines), engineering hardware, and some scientific research equipment (such as supercolliders and large lasers). A large residential or commercial building may consume several megawatts in electric power and heating energy.

The productive capacity of electrical generators operated by utility companies is often measured in MW. On railways, modern high-powered electric locomotives typically have a peak power output of 5 or 6 MW although some produce much more - the Eurostar, for example, produces more than 12 MW - while heavy diesel-electric locomotives typically manage 3 to 5 MW, whereas U.S. nuclear power plants have net summer capacities between about 500 and 1300 MW.[3]

The earliest citing for "megawatt" in the Oxford English Dictionary is a reference in the 1900 Webster's International Dictionary of English Language. The OED also says "megawatt" appeared in a 28 November 1947 article in Science (506:2).

[edit] Gigawatt

The gigawatt is equal to one billion watts. This unit is sometimes used with large power plants or power grids.

[edit] Terawatt

The terawatt is equal to one trillion watts. The total power used by humans worldwide (about 16 TW in 2006) is commonly measured in these units. The most powerful lasers from the mid 1960s to the mid 1990s produced power in terawatts, but only for nanoseconds. The average stroke of lightning peaks at 1 terawatt, but these strokes only last for 30 microseconds.

[edit] Petawatt

The petawatt is equal to one quadrillion watts and can be produced by the current generation of lasers for time-scales of the order of femtoseconds (10-15 s). Based on the average of 1.366 kW/m2 of total solar irradiance[4] the total energy flow of sunlight striking Earth's atmosphere is estimated at 174 PW (cf. Solar Constant). If all this power were absorbed this would be equivalent to the Earth gaining mass at a rate of 1.94 kg/s.

[edit]

Good luck.

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#21
In reply to #16

Re: Watts and Electrical Connectors

11/21/2009 9:51 PM

Thank you all that helped. As for the others..... I was trying to find a connector that could handle 5000 watts at 120 volts DC. Everything that I could find was rated different than I was looking for. I had a few good answers which lead me to get the correct connector which I handed to my electrical engineer. So to all that had fun at your expense, better luck next time.

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#25
In reply to #21

Re: Watts and Electrical Connectors

11/24/2009 4:24 AM

Sorry mate, but your original post insisted "and don't tell me XxY=W". Seeing as anyone involved at even the most basic stage of electrical engineering knows that the calculation for Watts is VxI=W, this seems to imply that you shouldn't be even talking about high power, high current connectors, never mind specifying them. And I still don't understand how Watts comes into the equation when it comes to connectors. Current and Voltage are the specified parameters, I've never seen Watts specified in over 40 years of engineering.

I'm sure all the other guys - like me - had fears for your health when we saw the naiivety of your question, a bit like "Hey guys, I've a loaded gun here, will it hurt to put it in my mouth and pull the trigger?".

However, I'm equally sure that I and all the other guys are pleased that you arrived at a satisfactory conclusion.

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#26
In reply to #25

Re: Watts and Electrical Connectors

11/24/2009 8:49 AM

Hi M Daniels,

I echo your thoughts and worries entirely! If there can be said to be a good point, it is that at least the OP is asking?

I thought it was me being silly when I did not understand the point he mentioned about connectors and watts? Makes me wonder if the OP really does understand what could happen if even one of these things is installed incorrectly?

I have said before on another post or two, that being called an Electrical Engineer means nothing unless you can prove where you were taught. Papers and 'qualifications' mean nothing either. I am no good with that large type of installation, but I realise that and do not attempt anything remotely like it.

Kinda makes you wonder if every Electrical Engineer should not have to apply to a recognised world wide accredited agency like 'IEEE'. That way everyone would be trained to the same standard.

Take care and happy holiday!

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#27
In reply to #26

Re: Watts and Electrical Connectors

11/24/2009 9:09 AM

Baby Bear

The biggest problem with a single standard for electrical engineers is that there is no single job for electrical engineers. My specialty is in energy efficiency, but previously I worked in design of electrical utility distribution. Industrial electric distribution is entirely different. So are controls, so are electronics, so are transmission systems. My EE degree is from one of the top rated engineering schools in the US but I would not ever expect to apply my learning to a single set of standards. NSPE does register people as Professional Engineers, but very few employers require that registration, so very few engineers seek the PE title. We I now work, we have engineers who never went to college but were given functional assignments that required engineering and were trained in house. All this being said, I agree that there is a need for some better method of designating who is and who is not an engineer but then do we hire the engineering police to enforce that. Maybe is it better left to let the industry and the market decide.

Lastly, I think the original poster (OP) was pulling our leg. No one with any background or basic understanding would not know that one kilowatt is one thousand Watts or that amperage and voltage are the key parameters for electrical equipment, especially if you are dealing with a connector rated at that many amps.

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#30
In reply to #27

Re: Watts and Electrical Connectors

11/24/2009 11:29 PM

Hi Guest,

Thank you for your reply post.

I can fully understand what you mean when to refer to some 'in house' trained EE having no papers. I have three uncles and two friends all doing different EE jobs. All are fully certified. There was a problem with Filipino EE trying to get a job in the States and the qualifications were not correct, and I believe they were false papers in that case but, these people had been setting up and hard wiring Transformers for whole Towns until then. It is hardly surprising some Countries power supplies fluctuate so much? I find it pretty worrying really.

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#28
In reply to #25

Re: Watts and Electrical Connectors

11/24/2009 6:37 PM

Okay, now that the dusty has settled, on to the explanation. I am not electrically smart. I know very little about electricity, just enough to know that you will do involuntary movements when the correct power is applied. I also know that there are a lot of people that should not touch electricity. I am one. If I can't see it, then it is not there. Boy is that ever wrong. Found out the hard way. And yes I did a lot of involuntary movements. Made me respect electricity a long time ago. Doctors were surprised I was still alive.

Something that a lot of you missed is that I asked a question the best way that I knew how. I was told by the electrical engineer what I was looking for. He was working on an electric motor. (watts) If you could not answer my question without a smart answer, then nothing should have been posted. Believe me when I say that I will strongly consider NOT posting any more questions here. I thought I had found a site of engineers or people that had respect for themselves and other people. I do not believe that I have and will continue my search.

As for the people that did try and help me and actually did, thank you very much. I am just sorry that you have to deal with the others I have previously talked about.

So long. I may check back from time to time, just to see if this has helped other people like me.

Oh, almost forgot. I am coming back in to mark this as off topic.

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#29
In reply to #25

Re: Watts and Electrical Connectors

11/24/2009 6:47 PM

Okay, now that the dusty has settled, on to the explanation. I am not electrically smart. I know very little about electricity, just enough to know that you will do involuntary movements when the correct power is applied. I also know that there are a lot of people that should not touch electricity. I am one. If I can't see it, then it is not there. Boy is that ever wrong. Found out the hard way. And yes I did a lot of involuntary movements. Made me respect electricity a long time ago. Doctors were surprised I was still alive.

Something that a lot of you missed is that I asked a question the best way that I knew how. I was told by the electrical engineer what I was looking for. He was working on an electric motor. (watts) If you could not answer my question without a smart answer, then nothing should have been posted. Believe me when I say that I will strongly consider NOT posting any more questions here. I thought I had found a site of engineers or people that had respect for themselves and other people. I do not believe that I have and will continue my search.

As for the people that did try and help me and actually did, thank you very much. I am just sorry that you have to deal with the others I have previously talked about.

So long. I may check back from time to time, just to see if this has helped other people like me.

Oh, almost forgot. I am coming back in to mark this as off topic just because someone will take offense to this. Truth only hurts if it is supposed to.

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#31
In reply to #29

Re: Watts and Electrical Connectors

11/25/2009 4:23 AM

I'm sure we all apologise for offending you, sir, but to come onto an engineering forum and ask us effectively what a Watt is then tell us NOT to give you a formula to calculate it, and then ask us "how many Watts in a kilowatt?" whilst talking about high power connectors, well....you frightened us to death. It would appear that your original question was borne of a lack of understanding of how to ASK the question. You can't ask engineers to answer a question and at the same time tell us that you don't want to hear the facts (i.e. "don't tell me VxI=W").

Sir, these are the basic elements of electrical engineering, taught in the first few hours of even the most humble course. And, by the way, a kilo of anything is 1,000 - you don't need a science degree for that! Where have you been all your life!

We engineers DO have respect for each other and appreciate that anyone asking a question will be short of knowledge in that particular field - else why ask? However, as you found out to your cost, we tend to "pounce" on anyone who appears to be involving themselves in a life-threatening activity without even the simplest idea of what they are doing.

Bear in mind that we get all sorts on here - students with homework questions; car owners with a misfire asking how to perform an engine stripdown; people who have scientific proof that they have invented a perpetual-motion or over-unity device; etc, etc. So you see why we are wary of postings that imply a less-than working knowledge of the subject. We are Engineers, not Primary Schoolteachers! You will find dozens of posts imploring posters to do a little bit of research themselves before asking a naiive question on here. THEN we respect the question (and are proud of our ability to answer it). We also respect your right to reply when we do get a little over-zealous, so you are right to respond.

Persevere with us, Sir, we are actually quite nice people when you get to know us, honestly!

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#32
In reply to #31

Re: Watts and Electrical Connectors

11/30/2009 7:56 AM

That was a good answer. The really scary part of this question is that Reltub says he has an electrical engineer working for him and he was searching for an answer to give to the engineer.

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#33
In reply to #32

Re: Watts and Electrical Connectors

11/30/2009 11:15 AM

The real scary part of all this is all I needed was an answer. The engineer left me a note and was unavailable. I needed that answer to do my job. If you really want to know what I think, give me a call at 6314032022.

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#34
In reply to #33

Re: Watts and Electrical Connectors

12/01/2009 3:47 AM

Hi reltub,

Dare I add to "the real scary bits? Yes.

If that is a real telephone number you must be bananas to publish it.

Good luck and happy holidays, I will give you a ring Xmas day OK?

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