I'm Bringing 3/0 wire at 3 phase from a 200a disconnect in main elect room going about 100' to a pull box and tapping smaller wires off the 3/0 to feed equipment that has fused disconnects on them not exceeding the 200 amps. Tryn to find in the code where it says this is ok. I thought wire taps are for service entrance wire only. does this sound right?