ohms

[Parache]

5000 feet of 1000 cir. mils wire total resistance?

 

[roger]

Is this a homework question?

You will find your answer in table 8 of Chapter 9

Roger

 

[roger]

It seems that your threads are homework/study questions, you will have to make an effort to answer them on your own.

Bring your answers to the table and the way you arrived at them and we will help you, we will not just give you the answers.

Roger

 

[Parache]

no it was on my test would like to know answer

 

[Parache]

my answer was 50

 

[roger]

no it was on my test would like to know answer

Okay, using Table 8 in Chapter 9 what would the answer be in your opinion, or what was your answer on the exam?

Roger

 

[charlie b]

Do you have access to a copy of the NEC? You can check the local library, and there is a way to read an on-line version for free. Take a look at the section Roger gave you in Post #2.

And as Roger said, you need to make an attempt to answer the question yourself, and let us know what you tried and what difficulties you encountered.

 

[charlie b]

OK, so we're having the problem of two or more people typing at the same time, so that the comments appear to be out of order.

How did you arrive at the answer of 50? Without yet looking at the table myself, I will venture a guess that that answer is way high.

 

[roger]

Did the question specify coated, uncoated copper, or aluminum?

And as a hint, Charlie is right, your answer is high.

Roger

 

[cschmid]

5000 feet of 1000 cir. mils wire total resistance?

Both charlie and roger are very good resources and they will help you out..give it a shot no one here will think you are dumb in fact some of the readers will learn as well..





psst..do you think the sucking up will get me brownie points..

 

[charlie b]

Without yet looking at the table myself, I will venture a guess that that answer (i.e., 50 ohms) is way high.

I withdraw that guess. I took a look, and came up with a number that was of the same order of magnitude. But it makes a difference whether you are talking about DC resistance, AC resistance, or effective impedance ("Z").

 

[wirebender]

psst..do you think the sucking up will get me brownie points..

NO!

Shhh!

 

[winnie]

5000 feet of 1000 circular mil wire, or 1000 kcmil wire? It makes a big difference in the answer

1000 circular mil wire is about 20ga.

-Jon

 

[Parache]

Don,t have NEC code book just have a UGLY'S ELEC. REF. book.

The anwser of 50 was a guess would like to know for the next time i take a test.

 

[charlie b]

5000 feet of 1000 circular mil wire, or 1000 kcmil wire? It makes a big difference in the answer

Good catch, Jon. That's what I get for reading too fast.

One brownie point for Winnie!

 

[charlie b]

Don,t have NEC code book just have a UGLY'S ELEC. REF. book.

Presuming the test you are talking about has to do with an electrician?s license, then I believe you are going to want to have a copy of the NEC, and you are going to need to be familiar with finding information quickly. I don?t know what version is in effect in your area, but you might be able to pick up a used copy of an older version (2005 or earlier) at a reasonable price. Also, as I said earlier, the local library might have a copy you could use while you are in the building, or perhaps an older copy you could check out.

The answer of 50 was a guess would like to know for the next time I take a test.

I am certain that guessing will not get you a passing grade. So I will repeat what was said before. Let us know the basis for your guess. Or try to follow the suggestions given earlier, and tell us how it works out for you.

 

[Parache]

Ok thanks will buy NEC code book.

The test is for Maintenance Supervisor (lighting) NYC

 

[Dennis Alwon]

You guys are too tough on the kid.

Here is an online version of the nec 2005 and Nec 2008. They are hard to use but better than nothing.

Nec 2005

Nec 2008