Appendix A - Wiring scenarios
Three-phase home
A10: Grid/mains and loads without neutral
circuit breaker and with neutral switching.
IQ System Controller 3 INT quick install guide
NOTE:
Local regulations in Austria may require that
an RCD be installed on the backup circuit.
Grid/Mains terminals
Non-backup loads terminals
Backup loads terminals
Earth bar
Neutral bar/Terminal for
battery neutral connection
Non-backup circuit breaker
Backup circuit breaker
IQ Gateway circuit breaker
(pre-installed and pre-wired)
WARNING:
are connected to their respective terminals.
The sequence of phase terminals in the unit is
L3-L2-L1 from left to right.
Legends
L1
L2
L3
Neutral
Protective earth (PE)
Main switch/
Circuit breaker/Fuse
Applicable regions:
Switzerland
Ensure that the phase conductors
Backup loads
Non-backup loads
Utility
Electricity
meter
grid
Austria
42
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