Ceiling fan in Load calculation

Status
Not open for further replies.
M

Mike Lima

Member
Location
Nevis
Should Ceiling fan load be included in Dwelling Service Load Caculation under Appliance Load (fastened in place) as per 220.53?
 
It is a lighting load and need not be added beyond the 3 VA per sq. ft. on the general lighting calc.
 
acrwc10 said:
It is a lighting load and need not be added beyond the 3 VA per sq. ft. on the general lighting calc.
Click to expand...
A motor that produces light??? Gotta see that one... :D

Where in Article 220 does it say a motor load excluded from calculation, or included with general illumination.

I understand these are typically connected to a lighting outlet... but once connected, the outlet is no longer a lighting [-only] outlet.

As for being required to be calculated as a non-general load, what about 210.14(C) and 220.18 (A)....???
 
Can you say overthink. :grin:

I never calculate the garage door opener.

Dishwasher and disposal are one load.
 
acrwc10 said:
It is a lighting load and need not be added beyond the 3 VA per sq. ft. on the general lighting calc.
Click to expand...

Why shouln't ceiling fans be treated the same way as bathroom exhaust fans, dishwashers, and disposals in dwelling service load calculations?

Oh... and what if the ceiling fan is likely to be use for more than 3 hours and hence making in a continuous load? How would one factor this into a dwelling service load calcualtion?

And how about garage door openers and residential gate openers, how should one treat those in service load calculation?
 
Mike Lima said:
Why shouln't ceiling fans be treated the same way as bathroom exhaust fans, dishwashers, and disposals in dwelling service load calculations?

Oh... and what if the ceiling fan is likely to be use for more than 3 hours and hence making in a continuous load? How would one factor this into a dwelling service load calcualtion?

And how about garage door openers and residential gate openers, how should one treat those in service load calculation?
Click to expand...

I don't add bathroom fans or ceiling fans into service load calculations, branch circuit calculations yes. These fans are so F-ing small why would you bother?????????? if your calculations take you so close to changing the size of the service or feeders, that a bath fan or ceiling fan would kick it up, you need to up size the service anyhow.:roll:
 
It would be nice if they had a realistic sample service calculation in the NEC examples that covers all things typically found in a house today. When you do service load calcs on a test question, the answer choices could be 120 amps, 124 amps, 117 amps, and 131 amps. The bath and ceiling fans would make the difference between a correct and wrong answer.

But I also agree acrwc10 -- the little nit loads don't really make a difference in the end. It would be nice if test questions answers for service load calcs were ranges such as 90-100 amps, 101-110 amps, 111-125 amps, 126-150 amps (and then don't make the calculated answer 110.5 amps!).
 
Status
Not open for further replies.
Top