Power Rating
Usually it is not practical to power an entire house or office from V2H because the V2L rating of the EV is only up to 3.6 kW, which is not enough to meet the total energy demand of air conditioning, hot water heating, coffee machines etc.
For example, an electric stove can use up to 5kW, a hot water heater can use up to 4.5kW, a pool pump can use up to 2kW, and a central air conditioner can use up to 10kW. Click here for more details.
Therefore, while V2H can be used to power lights and some appliances , it is not viable advisable to power an entire house or office unless it has been specifically designed to operate on a very low amount of power. You can try - but you are likely to trip the power when you turn on appliances!
Note: some new, large vehicles such as the BYD Shark can supply 7kW; this is much closer to being able to power an entire house if the house is:
- Very energy efficient,
- Uses gas or solar heating for hot water, cooking etc
- Does not have a pool
- Frugal air conditioning
Circuits
Typically we connect the lighting circuit of a home / office, as lights draw a small amount of power - especially if they are LED. They also do not typically have issues with inrush current (see below).
Then we can connect one or more circuits that feed your power points / outlets / sockets (aka General Purpose Outlets: GPOs) Lots of names for where you plug appliances into the wall. We usually want to connect the circuit that feeds the fridge-freezer, as this needs to stay on in a blackout!