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Originally Posted by davidmash
That part did. The rest of it .... not so much. Did what you type explain why 20w worked and 50 did not?  |
If they are both rated for 12V service and being used in a 19.7V lamp, they are both seeing more current than they were designed for. My best guess is that the 20W bulb has enough "margin" in its design to work with higher current, but the 50W bulb did not. I would not expect the 20W bulb to last very long in that service.