Power Factor

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Abdallah Gamal

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Cairo,Egypt
Dears,

As a i calculate the actual load for a project ...what is the initial approximate power factor for water heater & hand dryer ,FCU,AHU.

in case of i haven't data sheet of approved vendor at that time.

Regards,
 
Resistance loads have a power factor of 1.0 or 100%.

The blower on the hand dryer probably has a lower power factor, but is a small enough load overall plus is not generally anything that has much for run time, that it's power factor is generally disregarded.
 
Absent a cut sheet, and that might not even have the pf values, I would use 0.8 for the fan coil unit and the air handling unit.
 
charlie b said:
Absent a cut sheet, and that might not even have the pf values, I would use 0.8 for the fan coil unit and the air handling unit.
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But still you need to consider the power losses where PI=PO+PL.
 
kwired said:
OP's location possibly excludes use of NEC though.
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Perhaps. But posting to what is in essence an NEC forum calls for that distinction. JMO

(PS: Thread is in NEC sub-forum, not Electrical Calculations / Engineering sub-forum.)
 
Smart $ said:
Perhaps. But posting to what is in essence an NEC forum calls for that distinction. JMO

(PS: Thread is in NEC sub-forum, not Electrical Calculations / Engineering sub-forum.)
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I almost never look at what sub forum a thread is in, and typically browse via the "what's new" or "subscribed threads" shortcuts.
 
kwired said:
I almost never look at what sub forum a thread is in, and typically browse via the "what's new" or "subscribed threads" shortcuts.
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Same here, at least the former of the two... and that's sorta why I put it in a PS... :angel:
 
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