Large voltage offset between N and E, and L-N voltage either high (anywhere up to about 400V) or low, and varying with loading.
If you have a 3 phase supply, as one L-N voltage goes down, the others go up.
Even on single phase supply- if the lost neutral is out in the street where it is 3 phase, then you are trying to balance the neighbours loads, and extremis, exploding light fittings and disappointment all round. Act quickly to save the installation.
Large voltage offset between N and E, and L-N voltage either high (anywhere up to about 400V) or low, and varying with loading.
If you have a 3 phase supply, as one L-N voltage goes down, the others go up.
Even on single phase supply- if the lost neutral is out in the street where it is 3 phase, then you are trying to balance the neighbours loads, and extremis, exploding light fittings and disappointment all round. Act quickly to save the installation.
