If an EV's poly phase(3) Motor(s) are disconnected from it's inverter('s}, the inverter output is set to 60Hz, an acceptable voltage is maintained, and an acceptable(sinusoidal) wave form is achieved, the EV to a greater, or lesser extent, can power a home. Big dumb motors would run like topsy, resistance loads wouldn't notice, but pickier loads might act up, for instance power supplies that already have a high ripple voltage, or looking at it another way smallish capacitors across the output of their rectifiers.
If DC power is placed on the DC buss of the inverter, or the battery buss the car can "power" a home indefinitely, serving as storage solution, and inverter. This means that with a photovoltaic array, configured to the correct voltage, or using DC-DC converter/MPPT units similar to what SolarEdge manufactures, can supplement, or charge the EV batteries.
An EV that could do these things would form 2/3 of an "off the grid", or "back up" function better than anything else in terms of power. It would only lack a "prime mover". It could run your conventional heat pump, your well pump, your water heater, your air compressor, and in fact, it could run your neighbor's houses too.
Wikipedia lists the model 3 rear motor as 192 kW. In order to get 192 kW out of an induction motor, yes that's what it is, your inverter would need to supply around 213 kVA, assuming a power factor above 0.9.