![]() ![]() With outdoor work, you cannot have 2 circuits going to the same place unless they are different somehow: voltage, switching, etc. Cheating around the permitting process will get you in big trouble later. This means an electrical inspector will look it over, and this means you better be Code. If you don't know much about Code, you may not know about the need to pull permits. This is your local city inspector, the one who requires you pull a permit. The Authority Having Jurisdiction (AHJ) is the decider. This isn't indoctrination, it's understanding the why's. But the more you know Code, the more sense it makes. And newbies tend to think they can "outsmart" it. And many Code requirements seem rather silly, especially to someone with an EE background. Code can seem annoying when you're trying to do something, especially when you get fixated on one style of solution. Let's go over the ground rules and we'll build up to the solutions.Ĭode is your friend. My goal is to understand the best way to provide 30A 120V. Then, a single-pole 30A breaker goes to the TT30 receptacle. Thus, all the hots are breakered at both ends of their run. The neutrals from 12/3 and 12/2 go to the neutral bar in the subpanel, and for good measure, the neutral from the 14/2 also goes to the neutral bar, giving a total of 55A of neutral return. The black wire from the 12/2 also feeds into a 20A breaker into the sub-panel, also on pole A. The black wire from the 12/3 feeds into a 20A breaker in the sub-panel on pole A. Plan A-revised: Add a sub-panel at the RV site. ![]() I’d then connect both grounds from the nearby 12/2 UF cable (circuit 2 at 20 amps) and the 14/2 UF cable (circuit 3 at 15 amps) to provide a common ground for all cables on all three separate circuits. Then I want to parallel the neutral and ground wires to make a single neutral able to carry the 30 amps (circuit 1 at 30 amps). Plan A: With the 12/3, I want to parallel both the hots (the black and the red wire) to make a single hot. Let me describe my "Plan A" so far, and my Plan A-revised". It terminates in the main breaker panel on the property 14 gauge 14/2, which is planned to power lights along the perimeter, but so far it too is unused.It terminates in the main breaker panel on the property. 12 gauge 12/2, which is currently providing power to a dozen (mostly unused) 20 amp outlets along the property perimeter.At this point, the four wires of the 12/3 UF cable are unterminated at both ends (unused) but it is available and already buried from a 100 amp 240-volt subpanel, itself 120’ from the Main Breaker Panel for the property. However, the location is currently served by only 3 UF cables: I do not want to buy, dig and bury a new 10-gauge UF cable. I'm trying to power a 30 Amp x 120 Volt RV plug near the perimeter of a five-acre property (200' from the breaker panel). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |