Previous in Forum: Batteries for a Diesel Generator   Next in Forum: Sourcing a Single-Phase 230 VAC Variable Speed Motor
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
7 comments
Rate Comments: Nested
Anonymous Poster

cable size versus load

03/05/2009 9:10 AM

how to calculate cable size for loads
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Graebeard
Power-User
Engineering Fields - Electrical Engineering - New Member

Join Date: Aug 2007
Location: Toronto
Posts: 239
Good Answers: 9
#1

Re: cable size versus load

03/05/2009 9:23 AM

Your best source would be your local National Electrical Code book. CEC in Canada or the NEC in the US. It will list different types of cables and their max allowed current in different temperature ambients. The other consideration is the Cable-Fill allowed in a conduit. Assuming you need to run multiple conductors in a conduit or a cable tray, there are rules about how many you can use.
Reply
sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#2

Re: cable size versus load

03/05/2009 11:40 AM

Not again

Craigza has at least replied on the same subject at least twice recently.

Hey Craig- scope for another GA for you (I won't steal your patent so you reply to it)

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: cable size versus load

03/05/2009 2:34 PM

British Standard 7671 again.

Hey! How about a CR4 section for cable sizing and explaining power factor correction?

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Reply
craigza
Power-User
South Africa - Member -

Join Date: Nov 2008
Location: Johannesburg
Posts: 295
Good Answers: 12
#4

Re: cable size versus load

03/05/2009 11:56 PM

My My My - Whay do we have a forum?

If you do not know this you should not be messing around with it.

But please feel free to go to aberdare cables and download their cable sizing booklet. Take note that these standards apply to South Africa and may not apply to your country! (but why should this bother you?)

Secondly - Why bother as you probably would not understand the reasoning behind the calculations.

Thirdly - I thought this type of thing was taught in first year?

Fourthly ...... Search the forum - this has been answered so many times before and in such great detail.

Fifthly - is there no way to put an automatic block on this type of question. Where, if posted the persons computer blows up in their face?

Regards,

Craig
Reply
sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#5
In reply to #4

Re: cable size versus load

03/06/2009 1:01 AM

Fifthly : for this you should ask my help

I knew some times it will be too much even for you (see #2)

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Reply Off Topic (Score 5)
craigza
Power-User
South Africa - Member -

Join Date: Nov 2008
Location: Johannesburg
Posts: 295
Good Answers: 12
#6
In reply to #5

Re: cable size versus load

03/06/2009 1:11 AM

LOL - it is just too much. We really should block this type of nonsense. If they are too lazy to look through the forum - then we should be too lazy to reply.

Cheers

Craig
Reply Off Topic (Score 5)
sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#7
In reply to #6

Re: cable size versus load

03/06/2009 6:19 AM

You have one more

http://cr4.globalspec.com/thread/34418/cable-size

again by a guest.

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
Reply
Reply to Forum Thread
Have a Different Question?
7 comments
Copy to Clipboard

Users who posted comments:

craigza (2); Graebeard (1); PWSlack (1); sb (3)

Previous in Forum: Batteries for a Diesel Generator   Next in Forum: Sourcing a Single-Phase 230 VAC Variable Speed Motor

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (116 right now)
Show Members
Advertisement