Have you ever measured the inductance of a lamp filament? It's
insignificant.

Boden

Tony Hwang wrote:



Doug Miller wrote:

In article Wl3nb.194451$9l5.193936@pd7tw2no, Tony Hwang
wrote:

Tom Horne wrote:

As long as the lamps are incandescent the wattage of the lamps can
be used as the VA of the lamps.



VA is not equal to Watts. Reason? Power factor, Cosine Phi.
As far as math is concerned.



As far as a purely resistive load such as an incandescent lamp is
concerned, they are indeed equal.

--
Regards,
Doug Miller (alphageek-at-milmac-dot-com)


Hi,
Since you used word PURELY, even the filament of incandescent bulb has
inductance, how could it be pure R without X? I still stick my gun on
my statement. Watts is not equal to VA, better give some margin.
Tony