ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
What do you do?
by gfretwell. 09/24/17 12:05 PM
75 kva tranformer
by sparkync. 09/23/17 06:41 PM
Another generator question
by gfretwell. 09/23/17 04:15 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,939 Are you busy
176,736 Re: Forum
168,587 Need opinion
Who's Online Now
0 registered members (), 67 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#216141 - 10/16/15 03:50 AM D.F load of Equipments  
JUJU  Offline
New Member
Joined: Oct 2015
Posts: 1
India
I have seen an excel sheet in calculator to calculate the size of transformer.
There are option to put the vales of Kw,PF,Qty and Equipment D.F.
I could not understand what is D.F.
What is the equation to calculate the D.F and equation to calculate the total load D.F?


Tools for Electricians:

#216142 - 10/16/15 01:22 PM Re: D.F load of Equipments [Re: JUJU]  
ghost307  Offline
Member
Joined: May 2005
Posts: 911
Chicago Illinois USA
D.F. is probably the Demand Factor.
What percentage of the transformer rating is being used.


Ghost307

#216658 - 01/15/16 07:44 PM Re: D.F load of Equipments [Re: JUJU]  
Highrise  Offline
New Member
Joined: Jan 2016
Posts: 2
WA-CA, USA
DF= Demand Factor...a ratio portion of the total demand load of a system (or system part) expressed as a percentage calculated for usage allowed. [Art.220]


#216660 - 01/15/16 10:25 PM Re: D.F load of Equipments [Re: Highrise]  
Highrise  Offline
New Member
Joined: Jan 2016
Posts: 2
WA-CA, USA
Note that including the overall Demand Load depends on using a standard or optional method load calculation as permitted in Art.220 for determining the transformer rated capacity size needed.



Member Spotlight
Tom
Tom
Shinnston, WV USA
Posts: 1,044
Joined: January 2001
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.016s Queries: 15 (0.004s) Memory: 0.7601 MB (Peak: 0.8941 MB) Zlib enabled. Server Time: 2017-09-25 18:34:20 UTC