End Run Installation

Safety

  • Prior to the installation of the End Run, ensure the main breaker and any alternate power sources are turned off so the main panel is not energized.
  • Ensure that you do not to cut or damage insulation of any wires.
  • Adhere to local guidelines for all wire gauges and installation requirements.

Items Required

  • Small flat blade screwdriver
  • Wire stripper
  • #2 Phillips screwdriver
  • 13 mm wrench
  • ½” NPT conduit connector for SM-EC-NA
  • ½” Liquid-tight flexible metal conduit (LFMC) or EMT tubing
  • 10-12 AWG (3.3-5.3 mm2) THWN-2 differently colored wire
  • 8 AWG Copper solid-core grounding wire

Hardware Installation

  1. Using a flat blade screwdriver, remove the End Run cover by gently prying the locking tabs outward and sliding the cover off.
  2. Using a flat blade screwdriver, remove the End Run cover by gently prying the locking tabs outward and sliding the cover off.

    SunMAX Solar End Run Installation


  3. Locate the open connector at the end of your array of AC Modules and connect the end run cable to the
    Y-Cable until it is firmly seated.

    Note: One End Run can support up to 16 continuous AC Modules in an array. Solar arrays
    comprised of more than 16 AC Modules will require additional End Run assemblies.

  4. Locate the open connector at the end of your array of AC Modules and connect the end run cable to the Y-Cable until it is firmly seated.

    Locate the open connector at the end of your array of AC Modules and connect the end run cable to the
    Y-Cable until it is firmly seated.


  5. Thread the conduit connector into the End Run cover
  6. Thread the conduit connector into the End Run cover

    Thread the conduit connector into the End Run cover


  7. Feed the house-side wiring through the conduit and the cover of the End Run assembly.
  8. Feed the house-side wiring through the conduit and the cover of the End Run assembly.

    Feed the house-side wiring through the conduit and the cover of the End Run assembly.


  9. Secure the conduit to the conduit connector and insert the appropriate wires into their respective
    terminal block locations (L1-N-L2-GND) inside the End Run housing.
  10. Secure the conduit to the conduit connector and insert the appropriate wires into their respective terminal block locations (L1-N-L2-GND) inside the End Run housing.

    Secure the conduit to the conduit connector and insert the appropriate wires into their respective
    terminal block locations (L1-N-L2-GND) inside the End Run housing.


  11. Slide the End Run housing into the cover until it snaps securely in place and pull back on the wiring from
    the other end to reduce the slack.
  12. Slide the End Run housing into the cover until it snaps securely in place and pull back on the wiring from the other end to reduce the slack.

    Slide the End Run housing into the cover until it snaps securely in place and pull back on the wiring from
    the other end to reduce the slack.


  13. Position the End Run underneath and in line with the outside edge of the AC Module, preferably with the
    conduit side facing in the downroof position
  14. Position the End Run underneath and in line with the outside edge of the AC Module, preferably with the conduit side facing in the downroof position

    Position the End Run underneath and in line with the outside edge of the AC Module, preferably with the
    conduit side facing in the downroof position


  15. Spread the conduit support clamps open and fit them over the conduit with the non-threaded screw
    hole facing out. Twist the screw into the clamp until the screw thread is visible and protruding from the
    opposite side.
  16. Hook the conduit clamp on the inside lip of the AC Module and then over the outer lip. Tighten the screw
    on each conduit clamp to support the conduit on the AC Module.
  17. Hook the conduit clamp on the inside lip of the AC Module and then over the outer lip. Tighten the screw on each conduit clamp to support the conduit on the AC Module.

    Hook the conduit clamp on the inside lip of the AC Module and then over the outer lip. Tighten the screw
    on each conduit clamp to support the conduit on the AC Module.


  18. On the opposite end of the row of AC Modules, terminate the open Y-Cable using the Cable End Cap.
  19. On the opposite end of the row of AC Modules, terminate the open Y-Cable using the Cable End Cap.

    On the opposite end of the row of AC Modules, terminate the open Y-Cable using the Cable End Cap.


  20. Install the Grounding Stud into the pre-threaded hole located underneath any Panel Connector in the array.

    Note: A Grounding Stud can ground up to 60 AC Modules if they are connected together using
    Panel Connectors

  21. Install the Grounding Stud into the pre-threaded hole located underneath any Panel Connector in the array.

    Install the Grounding Stud into the pre-threaded hole located underneath any Panel Connector in the array.


  22. Insert one end of a copper solid-core grounding wire into the grounding stud and torque the hex nut to
    7.4 lb-ft or 10 N-m.
  23. Insert one end of a copper solid-core grounding wire into the grounding stud and torque the hex nut to 7.4 lb-ft or 10 N-m.

    Insert one end of a copper solid-core grounding wire into the grounding stud and torque the hex nut to
    7.4 lb-ft or 10 N-m.


  24. Ensure you label the End Run wires and complete the house-side wiring according to local rules and
    regulations.

    Note: Install a circuit breaker (maximum: 20A) at the fuse panel between the solar array and the
    grid-side power source.