Topic on Talk:Isolation of the neutral conductor

From Electrical Installation Guide

Artificial Neutral for TT and TN systems

1
Anas Ibrahem (talkcontribs)
  1. Authorized for TT or TN-S systems if a RCD is installed at the origin of the circuit or upstream of it, and if no artificial neutral is distributed downstream of its location

Can any one explain how we can make an artificial neutral at downstream