Keep blowing breaker

You need an electrician.

And what do you have plug into those outlets?

A 20 amp 110 v0lt line will support an average load of two kilowatts or so.

Any large motor will draw a large surge current on start up that might trip the breaker and then normal lights will have a surge current in being turn on also.

So more detail and what gauge wire did you used and how long is the wire run.

That's what I said

All that's plugged in is a radio and a small fan. 12\2 and run about twenty feet.

You had an electrician run a line from one outbuilding to another, yes, I read that, and then you wired the second building yourself, and now you're tripping the breaker with only a light load, you need to call that guy back because you are now over your head.

I wouldn't say that. It's a simple wiring job on an old shed that could use a little light and save her a buck or two. More than likely it's a couple wires touching and causing the breaker to trip. My connections are fine so it's probably on the end the electrician connected.

This is a question and answer forum. It's easy to just tell the poster "your over his head and to call an electrician" but that defeats the reason for the forum. I suppose the other day I could have told a guy on here that was having a carburetor leak on his motorcycle that he was over his head and to call a mechanic instead of giving him some advice on a project I am familiar with. We fixed his leak and I bet the beer he cracked after getting it all buttoned up and ready to ride never tasted so good because he tackled and completed a project by himself.

This circuit breaker in only feeding the line the shed?

If you know how to used a VOM checking for wires touching after you disconnect the power hardly seems a hard job!!!!!!!

There's the spirit! Offering advice instead of sarcasm on a question and answer forum is more like it Bill.