# Measuring total current of 3 phases house on neutral line only

Hi Community,

I made a setup where I measure the current only with one clip on the neutral line of a 3 phase household connection. The measurements I get are reasonable … but somehow I ask my self, can that be right?

Does that approach brings the overall household current? What’s you view on it?

No, that is not right. What you have actually measured is the imbalance in the loads of the three phases. In an ideal world, the loads on the phases are exactly balanced, and the current in the neutral wire is zero. And then, you do not need a neutral wire at all. You can see this in the power grid that crosses the country - there are only three wires, not four.

You can prove this for yourself. Switch off everything, then switch on all the things that are on one phase, and note what you measure. Then switch everything off again, and switch on all the things that are on a different phase, and note again what you measure. Do the same with the third phase.