# Fan Wattage

Discussion in 'Electronic Repair' started by Buck Turgidson, Jun 3, 2007.

1. ### Buck TurgidsonGuest

Does anyone have a guess as to what kind of power a fan like this draws, on
low speed?

3. ### mcGuest

The product manual is on Amazon and says 120 volts, 0.52 amp (i.e., about 63
watts).

Presumably, that is for high speed. As a rough guess, the lowest speed
might be 1/4 of that.

5. ### Buck TurgidsonGuest

I am very ignorant about electricity. Volts x Amps = Watts? Very good to
know.

6. ### EeyoreGuest

What bloody fan ?

The one up your ass ?

Graham

That's 63 VA

NOT WATTS !

Graham

8. ### EeyoreGuest

Except it's wrong for AC

V x A = VA

Graham

9. ### Buck TurgidsonGuest

Were you breast-fed as a child?

10. ### Michael A. TerrellGuest

Yes, by his dad. Isn't it obvious? He bounces around all the
electronics newsgroups while doing his best to piss everyone off, and he
hates America with both neurons.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

11. ### mcGuest

For AC this is only true if the volts and amps are in phase; otherwise the
watts can be somewhat less than the volt-amps.

12. ### mcGuest

Not a mistake, a simplifying assumption. We don't know the phase
relationship between the voltage and the current. The power is 63 W or
less, we don't know how much less. Nor do we know why he wants to know the
power, or whether he's actually concerned about power limits or current
limits.

14. ### James SweetGuest

At a unity power factor yes, but as the power factor drops (reactive loads
like motors and such) the wattage will be lower than volts x amps would give
you.

15. ### CJTGuest

I'd plug in the one I've got here and check, except it's in the "junk
box," having died long ago -- in fact, not that long after I bought it,
as I recall.