Answer:

Yes, it is possible to connect EnergyHub to a 4-wire system. You will be able to operate the EnergyHub, and phase balancing will work. The EnergyHub itself must be connected with L1, L2, L3, N, PE conductors. However, these can be connected to a distribution board that has a PEN rail. But Ferroamp cannot guarantee that all functions will work as intended, as the system is designed for N and PE to be connected to separate N and PE rails.

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If you need to get in contact with Ferroamp's Technical Support or if you have any questions about the system, you can do so by creating a ticket here.