The beauty of mercury vapor vs metal halide is that in most cases, they are interchangeable on a given wattage ballast, to an extent. Metal halide lamps, the older probe start specifically, requires a slightly higher open circuit voltage than a mercury vapor of the same wattage, which increases throughout the life of the lamp. New probe start metal halide lamps will often start and operate properly on a mercury vapor ballast, but will have trouble starting and appear EOL when in fact the lamp is still good for another several thousand hours. Whereas a mercury vapor lamp will operate on a probe start metal halide ballast as well as a pulse start metal halide ballast, but the ignitor should be disconnected as the high voltage pulses can damage the lamp during hot restrike time.
![ค้างคืนโรงเก็บกระสวยอวกาศร้างกลางทะเลทราย [Around The World Ep. 3]](http://i.ytimg.com/vi/E5bWZQhABJE/mqdefault.jpg)
Glad to see you uploading videos again! I really need to get one of these, just because they are so cheap and totally worth having for the price.
I got one of these today
It is absolutely fantastic
Nice
The beauty of mercury vapor vs metal halide is that in most cases, they are interchangeable on a given wattage ballast, to an extent. Metal halide lamps, the older probe start specifically, requires a slightly higher open circuit voltage than a mercury vapor of the same wattage, which increases throughout the life of the lamp. New probe start metal halide lamps will often start and operate properly on a mercury vapor ballast, but will have trouble starting and appear EOL when in fact the lamp is still good for another several thousand hours. Whereas a mercury vapor lamp will operate on a probe start metal halide ballast as well as a pulse start metal halide ballast, but the ignitor should be disconnected as the high voltage pulses can damage the lamp during hot restrike time.