
The thread on the candelabra end of the adapter lacks a full thread compared to a standard candelabra bulb. This caused an issue when installing it on one of my 12 devices. I had to grind down some of the plastic on the lamp sockets to allow the adapter to fit and make electrical contact. It worked without any change on all other outlets I had it installed on. I use it with 30w CFLs / 10w LEDs with no problem. Design wise, I wouldn't fit anything like a 100w incandescent bulb into this adapter, even though the rating given says it supports it.

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