We are having solar panels installed on the roof of the house we are just about to start building, and have been advised by the installer to get some kill switches installed, to allow us to turn off all unnecessary power points throughout the house at one switch.
Now we've already signed the contract and the electrical designs with PD. Is it is easy / cheap to make post contract adjustments with PD? Or would it be easier to leave PD as they are and get a sparkie to come in later and install the kill switches?