When too much is really too much?

According to the island’s Council, “the current Energy supply on Norfolk Island consists of 6 x 1.0MW diesel generators generating at 415 volts – 3 x CAT and 3 x Cummins gen-sets; diesel fuel supply on site of approximately 90,000 litres and a manual power station control system”.

Don’t get me wrong, I am grateful that we have electricity at all; despite outages being common and random. However I am freaking out when watching the mains voltage at my remote station. Today, it was fluctuating around 254V! Luckily, no equipment failure so far, but the fact that the control system is manually operated makes me really nervous. Perhaps I should call to complain, but at $3.25 per minute, what if they put me on hold?