Last night, under the cover of darkness, we had to install a dedicated outdoor distribution cabinet for a 21 kW heat pump:
The machine is going to be the heart of the HVAC system of a printing press where a daytime power outage is not possible, hence the night shift.
The 660 kg monster stands on a specially cast concrete base and has been provided with a dedicated grounding rod:
The machine will be connected with a 5x16 mm² ground cable. The distribution cabinet includes a main switch, a surge protector, a residual current device, and a 3x63 Amp C-type circuit breaker.