Sol-Ark 15K Generator Input, Smart Load & AC-Coupling Programming Guide
Complete parameter-by-parameter configuration guide for the Sol-Ark 15K dedicated GEN Breaker (80A): configuring Generator Charge vs. Grid Peak Shaving, Smart Load Dump, and 2-Wire Auto-Start on Pins 7 & 8.
1. 3-Way Triad Electrical Engineering & Protection Rules
The Multi-Purpose Sol-Ark 15K "GEN" 80A Breaker: On the Sol-Ark 15K, the 80A GEN breaker can be software-configured in three completely different modes: (1) Generator Input (charges battery & passes power to house), (2) Smart Load Output (sheds EV charger or water heater when battery drops below a chosen SoC%), or (3) AC-Coupled Microinverter Input!
Programming Sol-Ark 15K Generator Settings (Battery Setup → Gen Charge Tab): Check "Gen Charge", set Start V / Start % to 20% SoC, set Gen Charge Amps DC (e.g., 120A DC × 53V = 6,360W so a 10kW generator stays comfortably at 65% load), and set Gen Exercise cycle if desired.
Wiring the 2-Wire Auto-Start Relay (Pins 7 & 8): Locate the green pluggable dry-contact terminal block above the battery lugs inside the Sol-Ark wiring bay. Pin 7 and Pin 8 form a Normally Open (NO) dry contact relay that closes automatically whenever battery SoC drops below your Gen Start % threshold!
2. Single-Line Wiring Schematic & Parameter Table
SOL-ARK 15K GEN PORT & PINS 7/8 AUTO-START PARAMETER TABLE =================================================================== • Battery Setup -> Gen Charge: [X] Enabled • Gen Start SoC %: 20% SoC (Day & Night Winter Storm) • Gen Stop SoC % (via Time/Float): 85% SoC • Max Gen AC Input Power (Limiter): 70% of Generator Continuous Watts • Grid Setup -> Gen Frequency Window: 55.0 Hz Min to 63.5 Hz Max • Signal Block Pins 7 & 8: Wired to Generator 2-Wire Start Terminals
3. Direct-Wholesale Hybrid & Generator Interface Hardware
| Hardware Component | Engineering Specification | Est. Wholesale | Direct Source |
|---|---|---|---|
| 2x 14.3kWh 48V LiFePO4 Outdoor WallMount Batteries (28.6 kWh) | Closed-Loop CAN-Bus Communication with Sol-Ark 15K & EG4 18kPV | $6,598 | Check Price → |
| EG4 18kPV (Direct 200A Pass-Through Equivalent Architecture) | 90A Dedicated Gen Port + Built-In 200A Bypass Contactor | $4,899 | Check Price → |
Generator & Hybrid Inverter Integration FAQ
Can I use the Sol-Ark 15K GEN port for both an AC-coupled Enphase array AND a backup generator?
Not on the same breaker simultaneously without an external interlock/transfer switch or dedicating the GEN port to the Enphase array and connecting the generator via an external 48V DC Chargeverter straight to the 48V battery busbar!
Why does my generator hunt (rev up and down) when the Sol-Ark 15K starts charging?
If the inverter ramps from 0W to 9,000W in 1 second, the mechanical governor on the generator overshoots and hunts. Lower the "Gen Charge Amps" and enable soft-ramp so the governor stabilizes.