Light bulb question - JeepForum.com
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post #1 of 21 Old 09-21-2007, 08:45 PM Thread Starter
lrsmithwhaley
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Light bulb question

I just started renting the house so I have no clue what anything is, but I have a 40 watt light bulb in my bedroom, and was wondering what would happen if I put say a 75w light bulb in the socket.

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post #2 of 21 Old 09-21-2007, 08:49 PM
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Your room would get brighter and your electric bill would go up $.02!
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post #3 of 21 Old 09-21-2007, 08:52 PM Thread Starter
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Sweet! Yes I know that was a stupid question, but I'm to tired to think and during HS when we did the electricity lab I blew a breaker by playing with the circuit board thing. BTW I have no clue what wattage the sockets are.

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post #4 of 21 Old 09-21-2007, 09:01 PM
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There is no wattage to the sockets. The electricity goes to the socket and whatever wattage bulb you put in it is how much electricity will be used. Put a 100 watt bulb in it and wear shades if you want.
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post #5 of 21 Old 09-21-2007, 09:04 PM
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I use nothing but 40W bulbs in my house. The only bulbs higher than 40W are my outside lights. I like the soft light of the GE Reveal 40W bulbs.....it just seems like a more natural light. I like bright sunshine.....I work outside in it everyday, but when I'm at home I like softer inside light. However, to answer you question, the only result of putting a 75W bulb in the socket will be a brighter room......as was stated above.



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post #6 of 21 Old 09-21-2007, 09:11 PM Thread Starter
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My room was running a 40 watt with a recessed ceiling light and it was dark in my room. I just put in a 75 Watt GE reveal light that was in my closet and it is indeed brighter. Though I think I will look into CFL's.

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post #7 of 21 Old 09-21-2007, 09:15 PM
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All of my lights are CFL. You can get more light with less wattage and they last a very long time. I have had the one I now use for the porch light for 5 years.

Check the packaging on the CFL. Some can't be used in recessed sockets. I did that to one of mine and it died a very short life.
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post #8 of 21 Old 09-21-2007, 09:24 PM
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Well you lights are probably on a 15 amp breaker. They run at 120 volts. 15 amps * 120 volts = 1800 watts. Thats the biggest bulb you can put in without tripping the breaker. The room will be very warm and very bright.

*these calculations are based in speculation and no guarantee of viability exists. Use at your own risk.*

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post #9 of 21 Old 09-21-2007, 09:59 PM
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Some fixtures DO have a max wattage warning sticker, mainly when there's plastic bits close to where the bulb goes that might get a little melty with higher heat. I have a few that's either 75 or 100 watts max.

I agree going with the cfl bulbs. I got one for my outside light, but it was a smidge too long so I put it in the bathroom fixture. I never realized how grungy it was in there untill that bright bulb. It puts out 100 watts worth for about a third the cost of electricity.

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post #10 of 21 Old 09-21-2007, 10:06 PM
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Quote:
Originally posted by Dawgboy
Some fixtures DO have a max wattage warning sticker, mainly when there's plastic bits close to where the bulb goes that might get a little melty with higher heat.
That may be true, but still the socket has no max wattage. As Bgeddes states, he could put an 1800 watt bulb in there (if Bgeddes' calculations are correct) before the circuit threw. Now the fixture may have parts that can't stand the heat that the bulb is putting out, but that hasn't anything to do with the electrical output of the socket.
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post #11 of 21 Old 09-21-2007, 10:19 PM
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Actually sockets do have a max wattage. Stick some 300w bulbs in a "Y" splitter (as in 8 splitters) and see what happens...

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post #12 of 21 Old 09-21-2007, 10:23 PM
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Soooooooo, Bgeddes's calculations were wrong.

I recount my statement. Don't stick a 300watt bulb in a "Y" splitter socket. Are those standard on houses or do you screw those into a socket?
I'm just asking.
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post #13 of 21 Old 09-21-2007, 11:17 PM
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Quote:
Originally Posted by 4xgore
That may be true, but still the socket has no max wattage. As Bgeddes states, he could put an 1800 watt bulb in there (if Bgeddes' calculations are correct) before the circuit threw. Now the fixture may have parts that can't stand the heat that the bulb is putting out, but that hasn't anything to do with the electrical output of the socket.
Wrong. Stamped on that socket somewhere( or possibly a sticker) is a max wattage. But I know what you mean. It will work with whatever he puts in it. But trust me. At some point that 200 watt bulb will turn the wires brown and they'll get all crumbly and green.

The beauty of the new CFL bulbs is that since they don't get hot, you can put a 23 watt CFL which is the equivalent to about a 75 or 100 watt incandescent.

Most modern homes don't have to worry about a single light bulb blowing the breaker! At least they shouldn't. Its the stuff you plug in that usually does that.
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post #14 of 21 Old 09-21-2007, 11:24 PM
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Quote:
Originally Posted by Dawgboy
Some fixtures DO have a max wattage warning sticker, mainly when there's plastic bits close to where the bulb goes that might get a little melty with higher heat. I have a few that's either 75 or 100 watts max.

I agree going with the cfl bulbs. I got one for my outside light, but it was a smidge too long so I put it in the bathroom fixture. I never realized how grungy it was in there untill that bright bulb. It puts out 100 watts worth for about a third the cost of electricity.

Actually, its the actual socket parts and wires that overheat, not just the "plastic bits". The more covered and contained a fixture, the more it traps heat, so the lower the rating, typically. But the sockets themselves are rated differently based on construction.

FYI to everyone out there. I"m going to give away a service electrician's secret that is worth millions of dollars across the country every year. When bulbs burn out a lot its the socket. Its ALWAYS the socket. Often because someone used too large a bulb. So don't call the repairman. Replace the socket. There, you all owe me $100.
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post #15 of 21 Old 09-21-2007, 11:28 PM
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If in fact you can find an 1800 watt medium socket bulb, don't use it. My calculations are reasonably correct except, seldom is one ligthing circuit on a single breaker. There is no real need for bulbs over ~125 watts (most bigger bulbs are for outdoor use). Therefore, lighting is grouped on breakers at a standard amount.

Don't burn your house down, someone on JF is wanting to do it for you.

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