Use edison base with 277

[tank728]

Morning fellas,

My client would like to reuse existing recessed lights. Currently fed from 120 volt source. The new feed is 277 volt. Originally the recessed lights were supposed to get replaced but budget concerns are becoming an issue. They want to know if lights can support 277 volts. Is the edison lamp base rated for 277?

Thanks

 

[ptonsparky]

What is the fixture listing? Forget the lamp base.

 

[kwired]

What is the fixture listing? Forget the lamp base.

Agree. Lamp socket likely marked 600 volts in most cases, but the luminaire rating trumps that.

 

[tank728]

I searched thoroughly with no luck. But did find the lamp socket was only good for 250 volts.

 

[Jraef]

You can get 600V rated medium base sockets, but changing the socket on a fixture to something other than what it was listed with violates the fixture listing, so again, if the fixture is not listed for 277V, you can't use it.

 

[hbiss]

Are there 277V Edison based lamps?

Maybe I never had to look.

-Hal

 

[augie47]

60W, Frost, Incandescent A19 Bulb, Medium Base, 277V, PLT Solutions 0060A277V | 1000Bulbs.com

Shop 1000Bulbs.com for PLT 60A19/277V frosted A19 incandescent lamps. We offer great deals and fast shipping on all A19 lamps at 1000Bulbs.com!

www.1000bulbs.com

 

[hbiss]

Guess so.

-Hal

 

[hillbilly1]

Bought some edison base LED lamps at Depot the other day, they were rated 120-277.

 

[LarryFine]

Bought some edison base LED lamps at Depot the other day, they were rated 120-277.

Now, that's interesting.

 

[tom baker]

60W, Frost, Incandescent A19 Bulb, Medium Base, 277V, PLT Solutions 0060A277V | 1000Bulbs.com

Shop 1000Bulbs.com for PLT 60A19/277V frosted A19 incandescent lamps. We offer great deals and fast shipping on all A19 lamps at 1000Bulbs.com!

www.1000bulbs.com

I had thought the mogul base lamps were used on 277 as the socket has more clearance? Not sure.

 

[hbiss]

I had thought the mogul base lamps were used on 277...

That's what I thought too.

-Hal

 

[mbrooke]

Are there 277V Edison based lamps?

Maybe I never had to look.

-Hal

Use them in my home all the time:

https://imgur.com/a/LMX6pbT

 

[hillbilly1]

Feit Electric 150-Watt Equivalent Oversized High Lumen Daylight (5000K) HID Utility LED Light Bulb (1-Bulb) T80/2600/5K/LED/HDRP - The Home Depot

This T80/2600/5K/LED/HDRP E26 (medium) base LED light bulb from Feit Electric provides maximum illumination for large rooms, yards, or anywhere you need more light. LED technology puts out and ultra-bright

www.homedepot.com

 

[kwired]

Don't know what voltage HID lamps operate at, probably varies from one lamp to another to some extent, but I know they used different design on medium base sockets for higher withstand voltage on pulse start lamp types.

 

[hillbilly1]

Morning fellas,

My client would like to reuse existing recessed lights. Currently fed from 120 volt source. The new feed is 277 volt. Originally the recessed lights were supposed to get replaced but budget concerns are becoming an issue. They want to know if lights can support 277 volts. Is the edison lamp base rated for 277?

Thanks

View attachment 2554326

Might want to check the voltage rating on that limiter on the side, it prevents installation of too high of wattage lamps, it may only be rated for 120 volts.

 

[Jraef]

Spacing issues usually change at 300V and up.

 

[mbrooke]

Spacing issues usually change at 300V and up.

110% of 277 is 305?

 

[sameguy]

I used 277v years ago for temp lighting. Would use those led no,w.

 

[Jraef]

110% of 277 is 305?

Nominal, and I think I should have said >300VAC.

This chart is about impulse testing levels for the different voltage classes, but it indicates where the divisions are. (Red highlights are not mine, it's part of the image).