It happened severally to my neighboring street here in Lagos, and as a result of that people have decided to stop going out to check on the reasons why their generator sets suddenly goes off even when its in perfect condition.

Hoodlums!! They are the reason why.. they developed habits of going to switch off people's generator set while waiting for the unsuspecting victim to come out in order to find out why it went off, then they will come out from where they are lurking in the dark cornere and lead the victim back into his or her house and then rob the person.
In most cases, they switch of the fuel tanks, remove the plug or other things that will make one to come out and stay for some time trying to figure out what the problem is.

This has happened more than 14 times at the same street, now people has devised plans too. They refuse to go outside whenever their gen sets geos off no matter what the reasons are, whether of natural causes or not. "Let the gen stay there whether na fuel finish or wire shifted, let it stay there tll the following morning " so said one the ladies i met that lives in that street.

We should not neglect even the little things that seems like it doesn't matter for security purposes. They all matter. May God guard and protect us.