Posted by LJD on October 20, 2012 at 15:48:47 from (75.226.103.34):
In Reply to: 12 Volt CFL Lighting posted by John T on October 20, 2012 at 14:13:26:
I've been using them for years. No problems. In fact - they've been somewhat more durable then the 120 volt CFLs I've got in my house in barn. But that might be because of the different brands.
I've got the ones with the standard Edison threaded ends that are the same as a standard 120 volt AC incandesant bulb. So, it's easy to make mistakes and burn them up.
I've had two failures with the 12 volts CFLs. Both when my wife screwed them into a 120 volt socket. One big pop. Even blew the 15 amp breaker in the fusebox once.
We have a cabin that is wired half with 120 VAC and half with 12 volts DC. That's the problem. The fixtures that are on 12 volts are marked with a Sharpie pen reading "12 volts." But, since they look like normal 120 volt fixtures - mistakes get made. Also if you lay a 12 volt CFL next to a 120 volt CFL, they look the same. Easy to mix up.
I've also got a few 12 volt LED bulbs. So far, I'm not impressed with the light quality. They certainly do run on less current but the light quality itself is awful. That was an issue with the 120 VAC LEDs also - but now after many reviews by users, they've been improved. Not the case for the 12 volt LEDs though since they are not in great demand.
One wierd thing with LEDs. There seems to be no threshold of low voltage where they don't still put out a slight amount of light. A 12 volt LED still puts out dim light with 1/10th of a volt.
The BIG advantage to LEDs is their durability when used in a places that gets shut off and on, a lot. They can last almost forever under that kind of use. On the other hand, CFLs and incandesants suffer from frequent flipping "on" and "off."
I've heard others say CFLS of any kind are short lived. I've got some I bought at Home Depot in 6 packs for $8. That was four years ago and haven't had a bad one yet - in our house. That's the ones equivalent to 60 watt incandesants. The 40 watters DID fail a lot.
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