I have a 100 amp main breaker in my service panel. (not a sub panel). I'm changing the service panel to a newer 100amp panel. So I would like to change the wires coming from the meter outside to the service panel. The current wire is not in any type of pipe. It's three wires wrapped in a weather proof jacket. Can any one tell me what type and size wire I need to run. By the way I live in the Chicago land area.

Thanks guys.

The cable you see is called SEC cable. #2 alumimum 3 wire cable is needed from the utility connection to the meter. Need to check with your local code if SEC cable is still allowed, or will conduit be needed.

The cable you see is called SEC cable. #2 alumimum 3 wire cable is needed from the utility connection to the meter. Need to check with your local code if SEC cable is still allowed, or will conduit be needed.

Thank you very much tkrussell. You have been very helpful. You guys are the best. Thanks again.

I would be surprised if Chicago didn't require it in conduit---seeing that it's their golden rule.