Originally Posted by SweetSpot
Nearly all of the Lutron dimmer/switch failures we've seen have been from either lightning/surge damage, from overloaded devices running over their maximum rated load, or most often from not properly derating based on their location within a multi-gang installation. We've seen literally dozens of 1000W+ chandelier loads attached to a 600W dimmer that should have been derated to 400W given its center-gang location. Also, while the constant load is nearly always lower with LED lighting, they are much harder on dimming circuits than incandescents due to the large in-rush currents. Most residential electricians simply don't pay attention to the specs or just don't care.
I agree regarding improper load/derating issues and electrician ignorance.
Which is why I asked what kind of lighting was on them. I'm not looking to point blame, just to widen the discussion regarding lighting loads and potential impact that has on dimmer setups. Lighting has always had these kinds of complications, at least with regard to dimmers. LED lighting, however, brings along a whole other rats nest of complications.
The best advice I can give anyone considering LED lighting is that if you're "picky" about your lighting then do some research into the LED fixtures you're considering BEFORE you spend your money. They're not all created equal. Honestly, neither were incandescent bulbs
; but they tended to be less noticeable visually or less demanding on dimmer requirements. But, oi, did they tend to generate a lot of heat at the dimmer!
Given the LED will fade over time, consider what's going to happen when you need to replace one. IF (and that's a VERY
big IF) you can find the same element, you'll then be faced with it putting out the 'brand new' level of light, not the faded level coming from your other bulbs. So be prepared to replace all of them at the same time, at least those visible together as a group of lights.
Me, I stayed with halogen incandescent bulbs for all my recessed lighting. I've got two sets of spares for the whole house, to avoid availability problems for a while. For table lamps I've had decent luck with some Cree LED bulbs. At some point I'll find some screw-in LED replacements that give me to the same color temp & light output. Until then I'm happy to be avoiding the bleeding edge of LED/dimmer adventures.