The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Calling all Non-US members!! (Non-US only)
by aussie240
Today at 02:39 AM
Photo Upload Tutorial
by DanK
Yesterday at 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
0 registered (), 282 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#216141 - 10/16/15 12:50 AM D.F load of Equipments
JUJU Offline
New Member

Registered: 10/16/15
Posts: 1
Loc: 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?

Top
#216142 - 10/16/15 10:22 AM Re: D.F load of Equipments [Re: JUJU]
ghost307 Offline
Member

Registered: 05/09/05
Posts: 884
Loc: Chicago Illinois USA
D.F. is probably the Demand Factor.
What percentage of the transformer rating is being used.
_________________________
Ghost307

Top
#216658 - 01/15/16 03:44 PM Re: D.F load of Equipments [Re: JUJU]
Highrise Offline
New Member

Registered: 01/15/16
Posts: 2
Loc: 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]

Top
#216660 - 01/15/16 06:25 PM Re: D.F load of Equipments [Re: Highrise]
Highrise Offline
New Member

Registered: 01/15/16
Posts: 2
Loc: 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.

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals