Source google image: http://3.bp.blogspot.com/-PkMmil5C__4/UjNhPIbvSyI/AAAAAAAAInQ/2j8mp8xFaek/s1600/R%C3%A9gime+TNC,+lors+d’un+d%C3%A9faut+d’isolement.JPG
Schema electrique tnc
Source google image: http://3.bp.blogspot.com/-PkMmil5C__4/UjNhPIbvSyI/AAAAAAAAInQ/2j8mp8xFaek/s1600/R%C3%A9gime+TNC,+lors+d’un+d%C3%A9faut+d’isolement.JPG