C.s.a.

[bf03yvd]

Can someone explain what a Cross Sectional Area does please ? New to this, so i'm at the idiots guide stage lol:seeya:

 

[Marvo]

The cross sectional area of a wire determines its size and therefore is a determining factor in its current carrying capacity.

 

[telectrix]

resistance is inversly proportional to csa.

 

[MDJ]

Can someone explain what a Cross Sectional Area does please ? New to this, so i'm at the idiots guide stage lol:seeya:

Hey, are you in training? if so my advice would be to ask permission to gain entry to the trainee area, you may get a bashing in the open forums.

 

[Badged01]

In what sense? Its just the cross sectional area of something ..... brick, tile, cable, circle, cigar!

 

[dazza1981]

the cross sectional area of a wire determines its size and therefore is a determining factor in its current carrying capacity.

nuff said !!!!!

 

[NickD]

Um...it doesn't do anything, it just is. It's the surface area of a slice taken through a conductor. So if your conductor is a copper bar which has a square cross section and the square is 10mm on each side, you have a 10x10 = 100mm squared cross sectional area. Normally we're talking conductors which are circular in cross-section, or multiple conductors stranded together. A single circular cross section conductor with a diameter of 1.78mm you can work out has a cross section area of 2.5 mm squared. Seven of those stranded together would have a cross sectional area of 17.5 mm squared. And so on.

The relevance of it is, the more conductor cross sectional area there is, the less resistance it puts up to the electric current being pushed down it, and so the less volts it drops along its length as the current passes, and the less it heats up because of the current. It's like a water pipe - the bigger the pipe, the more water you can get down it with less pressure loss.

 

[bf03yvd]

I don't understand forums. I just posted it and hoped for the best.

 

[NickD]

Don't worry about it too much. Did one or more of the answers help?

 

[Badged01]

But whats your question? We can help you if you dont tell us what you want to know about the cross sectional area. Its a big world out there .....

 

[Richard Burns]

Oh well I have scanned the page now!

 

[telectrix]

hmm. what does c.s.a. do? takes a bloody great chunk of wages to keep the ex. in booze and smokes. kids walk round in rags.

 

[GMES]

So are younow saying that there are 2 things you don't understand
1. csa
2. forums
now i dont understand what you dont understand, if you understand what i mean!

 

[NickD]

But whats your question? We can help you if you dont tell us what you want to know about the cross sectional area. Its a big world out there .....

127 million kilometres squared cross-section, to be precise

 

[Silly Sausage]

The relevance of it is, the more conductor cross sectional area there is, the less resistance it puts up to the electric current being pushed down it, and so the less volts it drops along its length as the current passes, and the less it heats up because of the current. It's like a water pipe - the bigger the pipe, the more water you can get down it with less pressure loss.

So does that mean, if I fit out my house with tiny bore water pipes I'll get free hot water?
Save a frigging fortune on the gas bill!

 

[jaypp]

hmm. what does c.s.a. do? takes a bloody great chunk of wages to keep the ex. in booze and smokes. kids walk round in rags.

+ you don't even get to live in the house your still paying for!!

 

[jaypp]

127 million kilometres squared cross-section, to be precise

give or take 0.5 million!!

 

[NickD]

give or take 0.5 million!!

Yeah, depends if you cut across the poles or the equator, oblate spheroid n'all that

 

[Darkwood]

When i met my lass my CSA was adequate now she's had a baby it is not!... Hope this helps!

 

[NickD]

When i met my lass my CSA was adequate now she's had a baby it is not!... Hope this helps!

Surely that's the Child Support Agency

 

[Darkwood]

Surely that's the Child Support Agency

Thats why this post can stay up!... -- lol

 

[Sarz11]

There are some helpful answers here yay but definately go into the trainee section anyway as its good. Request permission from high tower or sintra or marv theyl help you through. I was going to post some examples of working out resistivity of a material soon which includes knowing the c.s.a. as it helped me so might help you too . It took someone back to there apprentice days so i guess if we learn stuff like that can only be a good thing whether its important or not

 

[Guest55]

I was going to post some examples of working out resistivity of a material soon.............

we cant wait ...........

;-)

 

[Sarz11]

View attachment 24103

we cant wait ...........

;-)

Ah hahahaha well glad your so enthusiastic im not sure it will help anyone