Column take off size

[Up in the Shed]

Hello

I have a 20 gallon boiler, 5500watt element, with a 2" TC fitting on top for the take off. I have used until now as a pot still and have great success.

My question....

As I choose a reflux column.... am I limited by the 2" TC for size? Can I go larger.... perhaps a 3-4" column... Seems it would be better fitted to my boiler size.... By using a 2-3" or 2-4" TC adapter? Or would that be counter productive?

At this time, I am not interested in changing the 2" TC take off. If its a bad idea, I can just go with a 2" column build, with slower speeds

Thanks for you help