The following sections detail how the IC Series Inverter/Charger should be wired. Before starting any wiring, read and understand these instructions. Wiring should meet all local codes and standards and be performed by qualified personnel such as a licensed electrician. The NEC (National Electrical Code) and CEC (Canadian Electrical Code) provide the standards for safely wiring, wire sizes, over-current protection, installation methods, and requirements.
IC Series systems can handle power from multiple sources (utility, generator, and batteries) which make the wiring hazardous and challenging.
The input and output AC and DC circuits are isolated from the Inverter/Charger chassis. The Inverter/Charger grounding is the responsibility of the installer in accordance with NEC/CEC or the local electrical codes.
All the DC and AC cables leading to/from the Inverter/Charger must be protected as required by code. This can be accomplished using jacketed (armored) cable or by feeding the wire through conduit.
CABLE STRAIN RELIEF & TORQUE REQUIREMENTS
The Inverter/Charger AC input/output terminals can handle multi-core cables up to 1.3” diameter. If using large diameter cable it is highly recommended to use additional (non-metallic) cable strain relief clamps mounted outside the Inverter/Charger.
These will ease the torque and leverage forces which could be present at the cable entry/exit locations.
Torque all AC and DC wiring connections, (including the manufacturer’s side of the mounting block), to 16 in lbf (1.8 N-m), make sure the connections are secure, and re-check all connections periodically (at least every 6 months; more frequently for heavy RV use) to make sure they remain secure.
- Protect all conductors that may be at risk of physical damage by using conduit, tape, or place them in a raceway.
- Do not mix AC and DC Wiring in the same conduit or panel. Where DC wiring must cross AC, try to make sure the wires cross perpendicular to each other.
- Both AC and DC over-current protection must be provided.
- The Inverter/Charger requires a reliable negative and ground return path to the battery.
- Use only copper wires with a minimum temperature rating of 75 °C.
CABLE LAYOUT PLANNING
Before connecting any cables, determine all cable routes to/from the Inverter/Charger.
- AC Input cables from the external transfer switch (if using shore and generator).
- DC Input cables from the batteries.
- AC Output cables from the Inverter/Charger to the AC breaker panel.
- Battery Temperature Sensor cable from the Inverter/Charger to the batteries.
- Remote Control cable to the Inverter/Charger.
- Ground wiring to/from the Inverter/Charger.