No. The lamp has to match the ballast. The lamp will not ignite if the wrong ballast is used.
No!
Not recommended. It would work but shorten lamp life and may cause risk of fire. However, if you just wanted to check a lamp was capable of striking it would be ok for a few minutes. I've done the opposite in the past and used a 150w lamp with a 100w ballast. Works, but not good for any of the components, including lamp.
I'm guessing but.... Maybe Garmin Nuvi 250W SatNav Probably the power rating on a power supply, although 250w is a bit low powered for a modern PC
NOT PROPERLY Although it may light, it will burn out pre-maturely due to the higher current flow. A ballast and its lamp must always be a proper match in any HID (high intensity discharge) application. The 400 watt rating of your ballast is NOT a maximum rating. It is 400 and only 400.
6500lm to 7000lm
20
the maps on 250w include all North America's vs 200w only the 48 states, Hawaii and Puerto Rico OR regional maps (if it's not bought in the US)
One solar panel is 250w
1234 is the Nuvi default pin
that card normally requires a 350w power supply but there are cases of it running on a 250w without problems. If you have a really good PSU then it may work but id guess no, it wouldn't
Yes
pretty close to 1 square inch for 250W 4sqin for 1kw