TC-ER-JP All-In-One Generator Cable
TC-ER-JP is a specialized multi-conductor power and control cable engineered specifically for the interconnection of standby generators and automatic transfer switches (ATS). Traditionally, generator installations required separate runs for high-voltage power and low-voltage control signals; however, this all-in-one solution combines both into a single, rugged assembly. Rated for 600V and featuring the critical "JP" (Joist Pull) designation, this cable is UL-listed for installation through residential or commercial joists without the need for conduit, significantly reducing labor and material costs. Whether you are installing a 7kW or a 26kW standby system, TC-ER-JP provides a code-compliant, streamlined path for both the heavy-gauge power conductors and the sensitive signal wires required for automatic start-up and monitoring.
"Stop pulling separate wires—grab a UL-listed cable that combines power and control in one run, saving you hours of labor and the cost of conduit."
Key Features
- All-In-One Construction: Combines 600V power conductors and 600V-rated control/signal wires under a single, durable outer jacket.
- Joist Pull (JP) Rated: Specially tested and listed for pulling through wood-frame joists and studs per NEC 336.10(9), eliminating the need for conduit.
- Exposed Run (ER) Certified: Features a ruggedized jacket that allows the cable to transition from a tray or joist into equipment without additional mechanical protection.
- Heat & Moisture Resistant: Insulated with high-grade THHN/THWN-2 conductors rated for 90°C in both wet and dry environments.
- Versatile Material Options: Available in both high-conductivity copper and cost-effective 8000-series aluminum to meet specific project budgets.
- Streamlined Installation: Reduces "pull time" by up to 50% compared to traditional pipe-and-wire installation methods.
- Full Code Compliance: UL 1277 listed and fully compliant with the latest National Electrical Code (NEC) for standby generator systems.
Pro Tip: Look for the "JP" marking on our jacket. This is your "pass inspection" guarantee—it proves to your local electrical inspector that the cable is safe to pull through your home’s wooden joists without a pipe.
Common Applications
- Standby Generator Interconnect: The industry-standard cable for connecting 7kW to 26kW home standby generators to their ATS.
- Automatic Transfer Switch (ATS) Wiring: Carries both the 240V power and the N1/N2/T1 sensing and control signals in one run.
- Residential Backup Power: Ideal for new construction or retrofitting existing homes with permanent backup power systems.
- Light Commercial Installations: Used for small business backup systems, retail stores, and medical clinics.
- Control & Signal Integration: Provides the necessary low-voltage communication path for generator status monitoring and battery charging.
- Indoor & Outdoor Transitions: Suitable for use in cable trays, raceways, or supported by a messenger wire in outdoor settings.
- Multi-Family Housing: Used in apartment complexes for individual unit generator backups where space for conduit is limited.
Installation Note
- Per NEC 336.10(9), TC-ER-JP cable may be installed in one- and two-family dwellings without a raceway (conduit) when supported every 4.5 feet and within 12 inches of every enclosure or box. While the "ER" rating allows for exposed runs, always ensure the cable is protected from physical damage in high-traffic areas and verify local municipal codes, as some jurisdictions may have specific requirements for exterior entry points.
Solid THHN/THWN-2 WireFrom $0.20/ft
Solid THHN/THWN-2 WireFrom $0.20/ft