The electric power should be convalescent with this.
Please turn on the power of something of necessity minimum by an electric appliance
It's able to happen to simultaneous use of a heater and a toaster hot-water heater as well as a combination of a heater and a microwave that electricity can be switched off.
The electric power is used much by a heater in particular on a cold day, so when using an electric appliance at a kitchen, I'll recommend only between it to turn off a heater.