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Sahir
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Join Date: Jan 2012
Posts: 5

Cable size?

01/12/2012 11:24 AM

Dear friends how to select cable size without knowing the load?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: Cable size?

01/12/2012 11:29 AM

Match it to the breaker.

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Leo342
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Posts: 10
#2

Re: Cable size?

01/12/2012 11:31 AM

That's easy! The formula is:

= PI * (some random number) * sqrt(-1) * mc²

Hence, you'll probably end up with an imaginary number.

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KJK/USA
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#3

Re: Cable size?

01/12/2012 11:39 AM
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rakesh_semwal
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#4

Re: Cable size?

01/12/2012 11:41 AM

By asking another question"How to know load?".
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king.faisal
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#5

Re: Cable size?

01/12/2012 11:46 AM

use electrical software for calculation
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lyn
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#6

Re: Cable size?

01/12/2012 11:47 AM

Have a question? Want to know the future?

Ask the all-knowing crystal ball!

INSTRUCTIONS: It's easy. Just type a question in the box below and click "Ask!"

Ask!

I really, really wish I hadn't made that resolution to be gooder. This is a perfect opening!!!!!
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Tobugrynbak
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#8
In reply to #6

Re: Cable size?

01/12/2012 12:26 PM

LOL, Talk about fish in a barrel...

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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

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Location: California, USA, where the Godless live next door to God.
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#9
In reply to #8

Re: Cable size?

01/12/2012 7:25 PM

I've never understood this metaphor.

What are the fish shooting at?

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lyn
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#10
In reply to #9

Re: Cable size?

01/12/2012 7:36 PM

No, no. The fish aren't sho.....................oh, never mind!
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JRaef
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#11
In reply to #10

Re: Cable size?

01/12/2012 8:12 PM
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TonyS
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#12
In reply to #11

Re: Cable size?

01/12/2012 9:51 PM

You two are wicked together!

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lyn
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#13
In reply to #12

Re: Cable size?

01/12/2012 9:54 PM

I could lead even the Pope astray!
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Tornado
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#14
In reply to #13

Re: Cable size?

01/12/2012 10:13 PM

Aha!--that explains it.

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SolarEagle
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#7

Re: Cable size?

01/12/2012 12:14 PM

By selecting typical load....What's the application?

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WJMFIRE
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Join Date: Apr 2009
Location: USA, Florida
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#15

Re: Cable size?

01/13/2012 1:13 PM

Ask this Gentleman. You may be meeting him soon.

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jonald
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Join Date: Sep 2009
Location: Singapore
Posts: 77
Good Answers: 1
#16

Re: Cable size?

01/13/2012 1:48 PM

NEC standard defines the size of wire as per equivalent size of circuit breaker. Applicable only for small loads like lighting or receptacle.
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Users who posted comments:

jonald (1); JRaef (2); king.faisal (1); KJK/USA (1); Leo342 (1); lyn (3); PWSlack (1); rakesh_semwal (1); SolarEagle (1); Tobugrynbak (1); TonyS (1); Tornado (1); WJMFIRE (1)

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