Doesn't the current to run the trains heat the wires?

When trains aren't running enough to keep the wires warm, wouldn't it be cheaper to warm them than to repair them?

I see that the trains are dead with no overhead wirefeed.

Shouldn't there be a small generator onboard for emergencies, to at least keep the toilets running? Perhaps a tank of natgas for heat?

I presume catenaries refers to the shape the feed wires take between supports.

Align culture with our nature. Ot else!