As with residential buildings, commercial buildings have a sort of hierarchy of systems that are of varying importance to their daily operation. Having the heater or air conditioner break down might be an inconvenience, but it will rarely be more of an issue than that. Losing the water heater might be a bit more of an issue, depending on the building.
Regardless of what commercial property you’re talking about, though, electrical issues are not to be underestimated. At best, an electrical issue can disable part of your building for however long it takes to get it fixed. At worst, it can start a fire or pose an electrocution risk. You really don’t want an electrical issue to go unchecked any longer than it has to. That’s why we’ve noted some easy ways to tell if your commercial electrical system is in need of repairs.