He chewed through the wires!

I let Marco out for playtime, and he runs around and under things. My tv is plugged in he was back there, and sometimes will be lay down. I heard this noise and look he had chewed the wired right through. Luckily it wasn't plugged in and I wanted to get rid of the tv anyways. He's now ignoring me, and won't get back in his cage. I swear he chews everything, I think next pay I'm going to order the inside playpen. So he can still come out but limited.