All earth leakage breakers in the domestic power supply to the IBC cabins will be bypassed and power to the cabins will be temporarily disconnected.
The entire job will take 6 hours, but each individual cabin will only loose power for one hour.
Switches delivering dedicated data lines will also be affected.
Additionally, the IKT (fibre) cabin will be connected to the UPS supply. This work will be done in the same period and will cut the data services for about 15 minutes.
Tehcnical and UPS power will not be affected by any of these operations.