In a recent question, I asked about different power ratings for LED and traditional incandescent light bulbs. In the accepted answer, the author explained that the different ratings are due to heat dissipation characteristics, and that it is not safe to run an LED bulb in a fixture that is not rated for that size LED bulb, even if it is rated for a much higher power incandescent bulb (ie. A 11W led / 60W incandescent fixture can't be used with a 20W led bulb.). While this works well enough for fixtures with labeling, the lighting that forms part of a building often does not have any labeling whatsoever. In the past, I have always replaced incandescent bulbs with a new incandescent bulb of the same rating, but that is not possible when replacing an LED with an incandescent bulb. What is the correct way to handle this?
The particular kind of fixture that makes up most of my house is this: