fusion bright

Welcome to my grow journal. I haven't grown in many years. I used to always have a grow but when my wife and I started having kids the grow was phased out. But now that I am an ACMPR patient and my kids are not kids anymore, I am going to start growing again all be it on a much smaller scale...

I have 5 600w ballasts and 1 1000w Most are fusionbright and digibrite. I set up a lighting control box from my 240v 30A dryer plug. My ballasts must not be able to automatically switch but they have advertised that both 120v and 240v can be used. My question is do I need to switch cords...