3-5 Wiring Diagram of AC Module System
Below is a sample diagram of the AC module system.
Install in the following order. For details, please refer to each chapter.
Chapter 3-6. Installing the AC Junction Box and PV Rack
Install the AC junction box and PV rack at the installation site.
Chapter 3-7. Mounting the AC module
Mount AC modules on PV rack.
Chapter 3-8. Connecting AC Module (Trunk Cable)
Connect to AC modules by using trunk cables.
Chapter 3-9. Grounding
Connect the equipment grounding conductor to the distribution panel.
Chapter 3-10. Connecting Array of AC Modules-to-Distribution Panel (General AC Cable, Transition Cable) -
240VAC, 208VAC
Connect arrays of AC modules to the distribution panel by using transition cables and general AC
cables. (Wiring method depends on the voltage of the utility)
Chapter 4-2. Connecting the Communication Gateway
Connect the communication gateway to 120VAC outlet.
/ PV Rack: Structure used to fix AC modules on surfaces like roofs, empty plots, etc.
/ AC Junction Box: Container for electrical connections of AC cables, usually intended to conceal them from sight and prevent tampering.
/ General AC Cable : AC cable, not supplied by LG, used generally for outdoor electrical installation.
/ Distribution Panel : Component of an electricity supply system which divides an electrical power feed into subsidiary circuits in a common
enclosure that provides a protective fuse or circuit breaker for each circuit.
PV Rack AC Module Trunk Cable Transition Cable
AC Junction Box
Equipment
Grounding
Conductor
General AC
Cable
Meter
Distribution Panel
120VAC
Communication
Gateway
Installation App
