Aux Wiring: System Shutdown Switch - enphase IQ System Controller 2 Quick Install Manual

Section C - Wiring
Aux wiring: System
Shutdown Switch
Aux wiring 1: System Shutdown Switch wiring
(compliance requirement)
The IQ System Controller 2 meets UL1741 PV RSE and NEC rapid
shutdown requirements for IQ8 Microinverters. The System
Shutdown Switch is the rapid shutdown initiator. The System
Shutdown Switch ensures a single point of initiation per NEC
2020. When turned off, the System Shutdown Switch will also
disconnect the battery from the system.
Wiring for systems with
IQ8 Microinverters
System Shutdown header
System Shutdown Switch
1 3
4 2
Note: Control lines to headers support 28 AWG and 16 AWG wire gauges.
IQ System Controller 2 Quick Install Guide
1 2 3 4
16 AWG wires
Butt splice wire
connectors
1 2 3 4
12 AWG wires
Wiring for systems with
non-IQ8 Microinverters
1 2 3 4
16 AWG wires
Butt splice wire
connectors
1 2 3 4
12 AWG wires
System
Shutdown
header
21