I just have a few questions on electric that I couldn't really find anywhere else. (That and I didn't think about them on the shoot I done last saturday)
1. What is the purpose of a 'ballast'?
I've looked through google and the best answer I found was to regulate the current going into the light. So it's kept on 'x' watts for the duration of it being turned on, to avoid any electrical damage.
If this is the case then, are powerful lights prone to this sort of damage without ballasts? Or is it just a precaution for the unlikely but worst?
2. How do major productions power their lights?
On a recent shoot with 'Phil Rhodes' we had to plug the 6kwatt HMI's in to the theatre next door. From my understanding the average U.K household has about 30amps to play with. Which is quite low when you start adding up the power consumption of a lot of these studio lights.
So, if there's no theatre nearby, and you've got a selection of huge lights to play with, how do you do it?
Edited by Daniel Ashley-Smith, 12 March 2007 - 02:33 PM.