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Anonymous Poster

Calculating Demand Factors?

02/10/2011 2:29 AM

hi good day

its hard for me to choose which will i be use a demand factors for a different load.my question is how can we calculate demand factors?.there is standards of NEC.but i am confused about this.
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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
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#1

Re: hi good day

02/10/2011 3:18 AM

Good day to you!

Look at BS7671

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#2

Re: hi good day

02/10/2011 3:30 AM

There are many electrical items that are not so much calculated as looked up in tables by various categories. Sometimes the formulas are too complicated for everyone to calculate, or they may depend on too many parameters (wet/dry, indoor/outdoor, number of conductors and how close to each other, type of appliance, etc.) And possibly the table entries have been determined by testing and measurement rather than calculation, anyway.

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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#3

Re: hi good day

02/10/2011 4:26 AM

Search for Electrical Installation Guide.
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salehmelhem
Active Contributor

Join Date: Feb 2011
Posts: 22
#4

Re: hi good day

02/10/2011 7:17 AM

Hi, Check this out for electrical installation guide. http://www.4shared.com/get/YOkbYjxw/Electrical_Installation_Guide_.html
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