Generator Transfer switch question
I currently have a 20 amp gentran transfer switch installed that runs 6 circuits off my 100 amp service box. It has a 20amp twist lock plug to connect to my generator. I have a 40ft cable that runs from the switch to the generator. I have just purchased a new generator that is bigger and has a 30amp twist lock output. My question is: do I have to replace my current switch and cable? I'm fine with the amount of backup circuits I've been running and don't want to spend a lot of money. Is there a way I can upgrade the current switch and cable or use a pig tail converter plug. What are the drawbacks?
Thanks in advance.