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Old 04-29-2017, 10:15 AM   #1
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Trying to figure out how to dim 120-4 watt LED vintage bulbs. There are 3 circuits with 120 bulbs on each circuit
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Old 04-29-2017, 10:23 AM   #2
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Do you have a part number on these bulbs?
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Old 04-29-2017, 11:16 AM   #3
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They have comparable lumens to 40watt bulbs
Are the ones your using dimmable?

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Old 04-29-2017, 02:23 PM   #4
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They are 6 watt not 4 watt. Dimmable CRI93. Power factor .90
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Old 04-29-2017, 06:04 PM   #5
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Lutron makes dimming panels. Not cheap.
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Old 04-29-2017, 06:45 PM   #6
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Quote:
Originally Posted by Cl906um View Post
Lutron makes dimming panels. Not cheap.
IMHO, dimming panels and cheap don't coincide ever.
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Old 04-29-2017, 06:52 PM   #7
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thats about 800W per dimer,
i am quite sure that there are dimers out there that will do it,
But the main problem I see is 800w is running current
What about the start up surge ?
smps can be highly reactive
but 120 of them could be substancial
the dimer will have to cope with this
All possible if you use good quality gear.
But I wouldn't be using HD dimers for this one !

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Old 04-30-2017, 08:47 AM   #8
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Quote:
Originally Posted by dmxtothemax View Post
thats about 800W per dimer,
i am quite sure that there are dimers out there that will do it,
But the main problem I see is 800w is running current
What about the start up surge ?
smps can be highly reactive
but 120 of them could be substancial
the dimer will have to cope with this
All possible if you use good quality gear.
But I wouldn't be using HD dimers for this one !

Not sure if he is trying to dim all three circuits at once with one switch though..
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Old 04-30-2017, 11:08 AM   #9
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Three circuits............3 dimmers
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Old 04-30-2017, 11:28 AM   #10
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800 watts of LED, I would look at Lutron and a power interface per zone. You'd need three neutral wire dimmers and three interfaces.

For LED's, this should work http://www.lutron.com/TechnicalDocumentLibrary/elvi.pdf but a call into Lutron tech support, give them the lamp type and loads, and they can verify.
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