On Apr 7, 8:13*am, Sam Takoy wrote:
Was putting a circuit in an electrical panel, and tried to get the
smallest knock-out out, but of course the largest (2"?) came out. So now
what do I do? Go get a 2" connector for a single wire or is there a
device that can close off this huge hole?

Right next to the 2" connectors at the electrical supply will be a box
of 2" plugs. Get one, pop it in, and get on with life.