I've wired my new shed located in back of yard with 12/2 wire and am looking to extend a 20amp line from edge of deck for an additional 50' to the new shed. I've found that the circuit is 20amp and the wire from the house to the edge of deck, existing is 14/2. While simply trying to test the shed wiring (which I am pretty sure is correct) the circuit kept tripping as soon as switched on. I know that the line from the house to the edge of deck needs to be replaced with 12 gauge, but the question is, is that the reason that the circuit is tripping or is it distance or is there something else.
Additional info: The only thing on the line at the time was a GFI on outside of house and what was wired in the shed. Originally it ended at edge of deck with a light for girll. That will have to be rewired. Also, I'll have to check the GFI at house of which I could not get the test and reset to work correctly. Figure I will uninstall that GFI and bypass to a new GFI down the line at the edge of deck. All switches and outlets in the shed are 15/20amp with a total of four switches. One for cut off inside shed, then three for lights, one being a motion detector.
Let me know if anything else is needed for info. All help is appreciated. Thanks!