Many months ago, I was in a big box retailer and picked up a case of special
purchase/promotional Sunbeam light bulbs marked 60 watts on the package and
on the bulbs.
I used one for the first time last week and noticed that the output seemed
dim so I tried another one. It- and several others were all the same--
putting out about 40 watts (measured with a light meter).
I took them back to the merchant and complained that they are mismarked but
since I didn't have my receipt, he would only give me the lowest clearance
price- $2.00- which wasn't worth it.
I really have no use for 40 watt bulbs and short of letting the kids use
them as targets, I don't know what to do with them. Any ideas?
Turn the light bulb on and let it heat up for a while, then tap it a couple
of times with your fingernail. It should brighten up some. Don't overtap
it; it just may go out and not come back on again.
Actually, the wattage rating is not the criteria for light output, although,
generally, the higher the wattage rating, the higher the lumens output. The
wattage rating is what is to be expected that the bulb will draw from the
power source. Lumens is the light output.
Light meters measure light not watts. Assuming you accuractly did your
measurments, what you measured it those 60W lamps were giving you about the
same amount of light as the 40W you were comparing them to.
Chances are they were either 130V (which means they were have lasted a
lot longer than standard lamps) or they were long life lamps (which means
they are marked 120V but are designed for higher voltage.
In either case they were not defective. They were just not what you
wanted. Seems you bought the wrong thing.
This is Turtle.
Before there was ruff service and long life light bulbs there was just 130
volt lite bulb. You can still order them from the electrical warehouse at
about $.90 each and are very good bulbs for lasting a very long time. They
put out not as much light as the regular 60 watt bulb but they will last
hooked up to 120 volts about 3 to 6 years. These bulbs are used on
Helicopter landing plateform on offshore production rigs. If you want a 60
watt lite out of them , just get a 75 watt and if you want 75 watts get 100
watt. Johnston Supply and Sesco still sell them for Exit signs and out of
the way lighting fixtures that stay on all the time 24 hours a day 7 days a
week. Before you throw them away. Send them to me for i use them for my
trouble shooting light and they will take a beating and keep on ticking.
With regular light bulbs , I use about 4 to 6 a week. With them I get a
month or more out of one bulb.
Look on the end and usely you will see written on it 130 volt Commercial
Thanks for all the interesting suggestions!
Just to clarify a point or two-- I got them at Target, not Home Depot or
Kmart. And I used a light meter to take reflective readings off an 18% gray
card under the bulbs in question compared to known good 40 and 60 watt
bulbs-- so I guess technically I wasn't measuring wattage but light output.
Sounds like a photographer. But the test is valid as far as
light output. If you read light bulb boxes, you will find
out the lumen output varies considerably even though the
bulbs are all rated the same wattage. None-the-less, a 60
watt bulb that puts out the same lumens as 40 watt bulb is a
this is Turtle.
Ruff service 60 watt light bulbs will not put as much light out as a regular
60 watt light bulb for they are rated at 130 volts and regular light bulbs
are rated at 120 volts. If they are rated at 130 volts they are running not
as hot as they normally be and not emitt as much light as the 120 volt rated
bulb. there is a difference in them.
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