SATCO Lighting S8759 8W LED PL Medium Base, 5000K, Type B, Ballast Bypass, 960 Lumens, 50000 Avg Rated Hours, 120 degree Beam Angle

No. The S8759 is a Type B ballast bypass lamp, so the ballast has to be removed or bypassed and line voltage wired direct to the socket. Leaving a working ballast in the circuit is not how this lamp is meant to run. Once bypassed it accepts anything from 120V to 277V at 50/60Hz, so the same lamp works on both 120V residential-style circuits and 277V commercial lighting branch circuits.

Yes, it's an enclosed rated lamp, so a sealed or gasketed fixture is fine. Burning position is universal too, so it can run base up, base down, or horizontal without affecting life. That combination covers stairwell jelly jars, closet domes, and sealed vapor-tight cans.

No, the 8W S8759 is non-dimming. On a dimmer it will flicker, buzz, or drop out rather than dim smoothly, and it can shorten lamp life. Put it on a plain on/off switch, occupancy sensor with a relay output, or a contactor-controlled circuit. If the room is on a wall dimmer, you need a dimmable lamp instead.

Not for either of those. The S8759 is not DLC listed, which is what most commercial utility rebate programs require for LED lamps, and it is not BAA compliant, so it does not meet Buy American Act sourcing requirements on federally funded work. It is FCC compliant for electromagnetic interference. If your project is rebate-driven or federally funded, that's the deciding factor before anything about the light output.

It is flagged non-compliant for California, so it should not be specified on work subject to California's lamp regulations. For a California project you need a lamp that carries compliance for that market. Everywhere else the 8W 5000K S8759 is a straightforward medium base retrofit.

5000K is daylight white, a crisp blue-white, not the yellow-warm look of a 2700K or 3000K lamp. Put next to warm lamps on the same floor it will read noticeably cooler and mismatched. It suits parking garages, back-of-house, laundry rooms, mechanical spaces, and stairwells where you want the space to read bright and clean. The S8759 is fixed at 5000K, not color selectable, so you can't field-set it to a warmer tone.

960 lumens out of 8 watts, which Satco rates as a 40W incandescent equivalent. In practice 960 lumens is brighter than a typical 40W incandescent and lands closer to a 60W to 75W incandescent in raw output, so for most closet, hallway, and utility replacements you gain light while dropping wattage. CRI is 83, standard for general-purpose commercial lamping and fine for corridors, storage, and back-of-house, though not what you'd pick for color-critical retail display.

120 degree beam angle, a wide general-diffusion spread rather than a spot, and the lens is frosted so the output is softened instead of showing individual diodes. In a corridor or stairwell that gives even wash between fixtures rather than pooled hot spots. It's not the lamp for accent or throw down a tall shaft, where you'd want a narrow beam reflector lamp.

The S8759 draws 0.067A at the low end of its voltage range down to 0.029A at the high end, meaning roughly 0.067A each on 120V and 0.029A each on 277V. Even loading a 20A branch to the 16A continuous limit, current draw is not what constrains you at that scale, so the count is set by your fixture layout and inrush considerations rather than by lamp amperage. Rated life is 50,000 hours, so on a 12-hour-a-day corridor schedule you're looking at a long relamp interval across a whole building.

Type B means the lamp runs on line voltage, so the CFL ballast comes out and the socket gets rewired direct to line and neutral. That is licensed electrical work in most commercial settings, and once done the fixture is permanently converted, so any future lamp in that socket also has to be a ballast bypass type. Nothing needed on the lamp side beyond the medium base socket. Plan the labor per fixture, not per lamp, when you're pricing a building-wide changeout.

The body is white with a frosted lens, so in an open jelly jar, a wall sconce, or an exposed porcelain socket it reads as a plain white lamp rather than an exposed diode board. It is a PL shape, so it sits flatter and shorter than a spiral CFL of the same output, which helps in shallow domes and tight globes.

Not as a three-way. The S8759 has one output level, 960 lumens, and will not step through low, medium, and high in a three-way fixture. In a three-way socket it will typically light at one or two of the switch positions only. For a fixture where the occupant expects three levels, this isn't the lamp.