New to the site and I appreciate everyone’s feedback in advance🙏.
My idea is using a 6/3 romex from the main breaker box in the basement to a junction box, spliced it and connect it to 4/6awg copper THWN including ground into a 1” or 1 1 1/4” sch40 pvc conduit to the garage.
Questions: 1- Will a 60amp breaker be enough for my garage or do i need to up to 100amp, will change the whole plan?
2- Can a junction box (as shown in the picture) be use inside the basement or it has to be outside?
3- Does pvc conduit needs to go straight to the underground or can it transition from cement into underground? I know it has to be buried 18”.
4- Should i use a main lug or a main breaker box in the garage? Garage