This put 250v to a single leg in my panel.

I don't believe the same, specially if the panels are leased. 

I installed a complete system in a 1000 sqft ranch rental but I also upgraded the panel to 100amps & ran all new 10ga wiring & 240V double-pole 30amp circuit breakers to branches of the units in series. 

I am thinking of adding solar panels (owned not leased) to the property to improve value. 

If we install an over the stove micro-wave 'code' requires us to run a dedicated 20amp circuit (12ga wiring) to the panel.

Actually had one leg of a electrical panel go out tonight on a property I manage for another investor.

Just purchased our first multi-unit and are being told we need to add an electrical meter and sub-panel to capture usage of all shared electric.

Purple painted rooms 70’s wood paneled walls and dingy outdated shag carpet are just fine to these folks .

The panel might need to be upgraded if it isn't 200 amps but that's an easy replacement.

@Pedro Tavares FWIW, I'm installing PV panels on what used to be an SFR and is now three units.