50W MV industrial

Well not not really an industrial because the socket is plastic And the cord says ikea..I converted it to 50W MV with a advance MH ballast, total ballast input power is .7A and a 50W MV runs at .6A so pretty close match for it, plus I can tell the warmup is about right, takes a good 4 mins to get to full brightness, also tried a 80W feit diffused MV and It warms up in abound the same time, they are indeed half the brightness of a 100W MV so I think I did this right
The ballast is mounted in a 5" square plastic box and I added a piece of aluminum to the inside measure of the box, then used some spare screws that came from another ballast kit to mount it to the aluminum
Romex clamps are on both sides, one is 120 in and the other goes to the lamp, ballast has 244 OCV