I want install 4 outlets 120/20A next each other in separate circuit breakers.The distance between panel and outlets around 150 feet. and run conduit 3/4. To save cost. How many or a minimum #12 wires can I use. I have 4 hot wires dedicated for each circuit breakers. And for neutral wires can i use 1or 2 white to all outlets and one green for all 4 outlets or I have to use sepreate neutral/w to each outlet from the panel.
if you use twin pole circuits (230 split outlets) then you can share a neutral wire in the circuit 4 outlets 6 wires. (use 2 red 2 black 2 white) If you use two circuits of the same leg from the panel then you cannot share a neutral. Check the codes in your country, Some places have code requiring a separate neutral for each outlet in case a later modification is done stupidly.
With all due respect ,it sounds like you are not familiar with basic electrical wiring. You have left out many details in your question. What are the outlets being used for? Are they going to be used for outdoor use? Is the conduit going to be buried? If so ,it has to be buried to the right depth. You may not even need conduit if it is for receptacles indoors. Sometimes pvc needs expansion joints.There are more things to consider before doing this work. Two 110 volt circuits can share the same neutral as long as the 2 breakers are on different legs in your panel box. This is very important because if they are on the same leg you will overload the neutral wire.Sometimes it is better to put the two circuits on a 2 pole breaker so the circuits don't get separated. Many things to take into consideration. Once again, with all due respect,you should definitely get a licensed electrician involved in the project. If you are trying to save money, perhaps you can work out a deal with an electrician where you do alot of the work and the electrician comes in to make the hook ups and examines your work. Sometimes this does not work out if you do it wrong because then the electrician will have to change your work if it is not done properly and to code. Hope this helps. Good luck
Why use 4 separate breakers? Run all four on one 20 amp breaker. Feed each outlet from the previous one. Check your local electrical codes.
If you don't share anything, you'd have 12 wires (3 per outlet). If THHN wires, it will fit in most any 3/4 conduit. You can share the green ground for all 4 circuits, bringing you down to 9 wires. To share neutrals, you can use 2 circuits per neutral, and it is very important that the two hots that go with a single neutral are on opposite phases in the panel (so there is 240V between the hots). You cannot use a single neutral for all 4 circuits. So the smallest number of wires would be 7 (4 hot, 2 white, 1 green).
The answer to this question is none of your business. If you were qualified to install the outlets you would already know the answer. If not you are running the risk of electrocuting people, causing an electrical fire or actually harming yourself. People who try to save money by running thier own cables are kidding themselves and risking lives. Call an electrician stupid!!!!!
