Powering up the SPC controller
The SPC controller has two power sources, the mains supply and the integral standby battery. A qualified electrician should undertake connection to the mains and the mains supply should be connected from a spur that can be isolated. See Wiring of mains cable to the controller for full details of conductor sizes/fuse ratings, etc.
The SPC should be powered from the mains first and then the internal standby battery. For compliance to EN only one battery should be fitted of the appropriate capacity.