BR30 and BR40 light bulbs
- Thread starter tractng
- Start date
Help Support House Repair Talk:
Wuzzat?
Well-Known Member
- Joined
- Jan 20, 2010
- Messages
- 2,471
- Reaction score
- 176
BR40 in a BR30 fixture as long as the wattage is under the manufacturer recommended? It just fits nicer.
If the glass bulb size is the same so you get the same amount of free air circulation within the fixture, and the lamp base is in the same base-up or base-down configuration, I can't imagine a reason why you can't.
Of course, UL and the manuf. has the final word on this.
Last edited:
Wuzzat?
Well-Known Member
- Joined
- Jan 20, 2010
- Messages
- 2,471
- Reaction score
- 176
And their bias is in the direction of selling you more bulbs.Thanks. The guy at home depot says I can but what do those guys know
tony
The 40 is 30% larger in diameter than the 30; how much room is left in the fixture?
Last edited:
I have been in the lighting market for 30+ yrsHello,
Can I use BR40 in a BR30 fixture as long as the wattage is under the manufacturer recommended? It just fits nicer
tony
a BR40 bulb is 40/8ths of an inch wide
a BR30 is 30/8ths of an inch wide
so now you know how bulbs are measured
a F40T12 is 40 watts and 12/8ths of an inch wide
Wuzzat?
Well-Known Member
- Joined
- Jan 20, 2010
- Messages
- 2,471
- Reaction score
- 176
Why don't they publish the lux levels for bulbs? It's the reason for buying a bulb.
I had to e-mail the manufacturers to get lux levels for a two-tube troffer and a 75w halogen flood [1800 lux at 5'].
And their bias is in the direction of selling you more bulbs.
The 40 is 30% larger in diameter than the 30; how much room is left in the fixture?
Good amount of room. They even have a display of the br40 on the same fixture
tony
Wuzzat?
Well-Known Member
- Joined
- Jan 20, 2010
- Messages
- 2,471
- Reaction score
- 176
I guess it'll work but if the bulb life is significantly shorter than expected you might try the smaller bulb.Good amount of room. They even have a display of the br40 on the same fixture
tony
