I have connected a three-phase incoming power to a MCCB, MCCB will distribute to a 3-phase transformer as well as few single phase equipment, which is means outgoing of MCCB L1, L2 & L3 to transformer, L1 and N (neutral is from incoming distribution) to a 1–5A single phase AC-DC power supply, L3 and N to a 10–15A single phase heater. The problem is, is the wiring correct and safe to use?
Purpose of using transformer is to supply 3 phase 230VAC to servo motor as servo motor support only 3 phase 230VAC instead of 3 phase 415VAC. Besides, that's means I am safe to use two MCCBs (one for transformer another one for single phase equipment) from incoming power supply (from factory distribution board)? Will it damage the 3 pole MCB in the factory distribution board which supply to my two MCCBs?