I have a 1200 w HMI as well as a 2500w HMI. A 1200w HMI will pull 14-15A, so you can plug it to a regular house circuit. my 2500w is a little older and needs a little more power than new ones. It and most (but better check) 2500w will run 90-250v, it pulls 40A at 120v or 20A at 240v. So I can wire it to a 30A dryer outlet. Hot Hot Ground, just be sure to get the ground right. I recently ran a 4k with a newer electronic ballast off a 30A 240v outlet. You could make a 2-15A 120v spicer to a 60A 240v bates but its kindof rinky dinky, I would just use a dryer outlet. Or a 50A Range or welding outlet is even better. Otherwise you will need a 4500w-5500w genny dedicated to the light and with extra gas on hand to run a 2.5k.