At that size you should seriously consider running the heated bed off of AC.
[www.omega.com]
[www.omega.com]
All you need is an SSR and a heatsink for it. They're pretty cheap on amazon.
I drive 12x12 and 9x9 heated beds that way now with zero issues.
[www.omega.com]
[www.omega.com]
All you need is an SSR and a heatsink for it. They're pretty cheap on amazon.
I drive 12x12 and 9x9 heated beds that way now with zero issues.