#3 AWG 3/C with Ground Generator Cable + 18/6 Control Wire, UL Type TC-ER-JP, 600V

This #3 AWG copper generator cable assembly carries a full 100 Amp ampacity rating. It is specifically engineered to handle the maximum output of heavy-duty 17kW to 24kW home standby generators (like Generac, Kohler, and Briggs & Stratton units) connecting to a 100A automatic transfer switch (ATS). 

This composite cable is engineered specifically for mid-to-large residential standby generators, which are typically sized to provide "whole-home" backup. While smaller units can get by with 8 or 4 AWG, generators in the 20kW to 24kW range produce enough current to require a 100-amp circuit. By utilizing 3 AWG copper conductors, this cable ensures that your home’s heavy loads—such as multiple air conditioners and electric water heaters—can run simultaneously without the voltage drop or heat buildup that would occur with undersized wiring.

The "18/6C" portion of this cable contains the standard communication lines required by the most popular automatic transfer switches (ATS).

• The "Brains" of the System: These six wires handle utility sensing (N1, N2), the 12V DC start/stop signal, and the battery charger circuit (T1).
• Eliminates Multiple Pulls: Instead of pulling three large power wires, a ground wire, and then a separate control cable, this hybrid design lets you complete the entire electrical hookup in a single pass.
• Compatibility: This 6-conductor configuration is the "gold standard" for standard Generac and Kohler installations, matching the terminal blocks found in the most common residential ATS models.

One of the biggest hurdles in generator wiring is the NEC rule prohibiting low-voltage wires from sharing a raceway with high-voltage power lines.

• The Solution: This cable is fully code-compliant because the 18 AWG control wires are manufactured with the same 600V insulation as the 3 AWG power conductors.
• Single Conduit Run: Because all internal wires are rated for the highest voltage present, you can legally run them in the same pipe or trench. This saves significant costs on conduit, connectors, and trenching labor.

Standby generators are mechanical engines that produce constant micro-vibrations while operating.

• Fatigue Resistance: Unlike solid building wire, which can become brittle and crack over time when subjected to movement, the stranded annealed copper in this cable is highly flexible.
• Secure Connections: Stranded wire provides a better "bite" in the mechanical lugs of the generator and transfer switch, ensuring that the 100-amp connection remains tight and low-resistance despite years of engine oscillation.