We have a Gazebo (concrete slab approx. 50x20) to wire that will have few lights and receptacles. It will be used for people to have parties, BBQS, etc. To stay code compliant, is it OK to run 2 - 20 amp ckts. out to the structure, or do I have to install a 2ckt. sub-panel at the structure. All sides are open on this patio and the breaker panel that I will run the ckts. from is approx. 50' away. I was going to go with a sub- panel, and another Elec. said I did not need it. Thanks for the input.
If you run a multi-wire circuit (i.e., an Edison ckt--two hots off diff. legs & a neutral), there's no need for a subpanel. And of course you need an equipment grounding conductor. So some 12/3 wg UF will do the trick, or bk, red, wht, grn THHW in pipe.
I plan on running seperate nuetrals. One ckt. for the lights, one for the outlets. When I was going through the code, in the ground section with diffrent buildings, structures, etc., I was getting into the panel idea, but it sounds like it's not required.
I strongly suggest the use of the multiwire branch circuit as amp man suggested, it is better for voltage drop.
Also one multiwire branch circuit will not require a ground rod to be driven at the Gazebo. If you run two - 2 wire circuits you must drive a ground rod and connect it to the EGC at the gazebo. 250.32(A) be sure to read the exception.
You will also need disconnects at the gazebo for the circuits you run out there. 225.31
This could be one double pole switch or two single pole switches.
Good Luck, Bob
Bob Badger Construction & Maintenance Electrician Massachusetts