Everytime I feel like I understand this section,I talk myself out of it.My brother built a garage remote from his house.The house has a 200amp 30 circuit outdoor rt mainlug panel which is fed from a 200a combo metercan mounted on a pole out in the field.There is (3) 3/o's and (1)#4 thhn copper feeding the panel on the house in 2" pvc from the combo meter,neutral and ground are seperated at the house panel.we installed a 2pole 100amp breaker in this outdoor panel and ran "2 urd (3) wire no ground from the house panel to the garage.
there are no continous metal paths between the house and the garage,we stubbed down 1 1/4" pvc at both ends and direct buried the cable between.At the garage we lb'd inside to a 20 circuit 125 amp mainlug panel where at least 10 circuits are being used.We drove a ground rod at the garage and bonded a #6 ground wire to the neutral bar in the garage panel.This was all done before I got into the electrical field. My question is was a main breaker required in the garage panel as per 230.70? even though we had the 2p 100a breaker at the house? also 250.32d (1) states that the neutral to ground connection shall not be made????????.does 250.32d apply only to buildings with disconnecting means and if so what difference does it make. Thanks! sorry this was so long.
there are no continous metal paths between the house and the garage,we stubbed down 1 1/4" pvc at both ends and direct buried the cable between.At the garage we lb'd inside to a 20 circuit 125 amp mainlug panel where at least 10 circuits are being used.We drove a ground rod at the garage and bonded a #6 ground wire to the neutral bar in the garage panel.This was all done before I got into the electrical field. My question is was a main breaker required in the garage panel as per 230.70? even though we had the 2p 100a breaker at the house? also 250.32d (1) states that the neutral to ground connection shall not be made????????.does 250.32d apply only to buildings with disconnecting means and if so what difference does it make. Thanks! sorry this was so long.