That's odd, because in a lot of contexts (hospitals, EMS, etc.), red outlets are used to denote outlets that are connected to battery/UPS, i.e. critical loads,

That's odd, because in a lot of contexts (hospitals, EMS, etc.), red outlets are used to denote outlets that are connected to battery/UPS, i.e. critical loads, versus the regular, which can be 'sacrificed' in an outage.