we have an outdoor ceiling fan with a glass globed light kit in our screened
in porch. it takes two light bulbs. the owners manual says to use 60w bulbs.
the 60w bulbs don't throw quite enough light for reading out there at night.
any danger in my using 75w bulbs instead of the 60w bulbs?
Practically speaking, no. They do make newer bulbs that put off the same
number of lumens as older 75 watt bulbs, but consume less energy. So you
really can't use that rating exactly anyway. It's a guide that puts you
safely in a zone. But it's not an exact thing.
If the globe is enclosed 100% I won't ever say yes to a third party. If
open then speaking from experience and the lack of burning down my house
it would be ok. Most if not all lamp fixtures are rated at 60 watts. I
have a Hunter fan in my bedroom rated at 60x2 and have 75x2 inside in an
enclosed globe. Granted I don't use it at full power all the time I feel
quite safe 10 years going.
#1 Offishul Ruiner of Usenet, March 2007
#1 Usenet Asshole, March 2007
I've used 75 and 100 watt bulbs in tthe white globes that are sold for
kitchen and hall lights, maybe 6?inches. It wasn't clear that they
were burning out faster. All the bulbs in my house seemed to burn out
fast, but after 20 years of this, 2 of the 3 kitchen sockets were
damaged. The outer plastic (brown bakelight or plastic) had broken
off 2 of them and 1 of them doesn't have a good connection with the
wire. I'm replacing it. The hall lights didn't suffer near as much,
partly becasue sometimes I used a 60, or 75, and partly because I
don't run those lights near as much.
It may well be true that I used nothing but 60's for the first 10
years out of 20. It might be that I finally decided I didn't have
enough light and started using bigger bulbs.
And it probably didn't take the full 10 or 20 years to damage the
sockets. They've been chipping off for years, and finally one is
missing all of its plastic on 50% of the circumference. Of course I
also used 100 watt bulbs sometimes.
I have a whole new fixture to put in, which is attractive and uses
neon bulbs, but before I got it in, I saw the same fixture at a
friend's, and he had taken it out saying it didn't give enough light!
Dang. My new one has two U-shaped neon bulbs, at least two-feet long,
or a totat of 5 feet per bulb. I'm hoping it will be brighter than
say 250 watts of incandescent.
Then why isn't the fixture rated for 75 W bulbs?
While _probably_ minimal chance, certainly isn't _no_ increased danger
of overheating. Remember there are two, not just one, so it's really
rating the globe at 120 W vis a vis 150. I suspect the biggest
limitation is the globe, but if OP is going to use larger bulb, at
least make sure they're of the higher-efficiency type...
I'm *sure* it's true, on several counts: first, I *have* seen that damage, and
second, I'm quite sure you have *not* seen it, or you wouldn't suppose that
there is no harm in exceeding the recommendations.
Guess again. That's why the manufacturer puts limits on there. If there was
enough tolerance to handle 75W safely, the socket would be marked 75W instead
There you go. They put those recommendations there for a reason.
Doug Miller (alphageek at milmac dot com)
I once saw a "banker's lamp" style desk lamp rated for 60 watt bulbs and
that had the wires produce a burning ofdor and visibly char to a dark
brown color within 10's or hundreds of hours with a 60 watt bulb. I
suspect it was tested with a bulb having a vacuum (if it was properly
tested at all) and the lamp apparently came with a gas filled bulb. The
bulb was a refrigerator/showcase style tubular one, and 120V bulbs of that
style and up to 40 watts normally have a vacuum.
- Don Klipstein ( firstname.lastname@example.org)
Could go w/ an A19 bulb instead of A15, however, and get roughly 25%
more initial lumens at the same wattage (assuming the fixture will
accept the larger size).
See GE comparisons at
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