# Neutral current in three-phase systems

Hello,
In three-phase systems, star coupling for example, and in the case where single-phase sources are supplied using the three phases L1, L2 and L3 with a common neutral return,
My first question is: when one is balanced il1 = il2 = Il3 is what the current flowing in the neutral is zero, indifferently that the charges are R, L, C and RLC.

thank you