Magnum Energy AC Load Diversion Controller (ACLD-40) - Manual (Page 20)

Page 13
©
2015 Sensata Technologies
Installation
2.4 General Wiring Requirements
This section describes the requirements and recommendations for wiring the ACLD controller.
Before wiring the controller, carefully read all instructions.
Wiring should meet all local codes and standards and be performed by qualifi ed personnel
such as a licensed electrician.
The NEC (National Electric Code, ANSI/NFPA 70) for the United States and the CEC (Canadian
Electrical Code) for Canada provide the standards for safely wiring residential and commercial
installations. The NEC (or CEC) lists the requirement for wire sizes, overcurrent protection, and
installation methods and requirements.
WARNING: Because the ACLD is wired with an inverter/charger, there is power from
multiple sources (inverter, generator, utility, batteries, solar arrays, etc.) which make
the wiring more hazardous and challenging. Ensure they are all de-energized (i.e.,
breakers opened, fuses removed) before proceeding—to prevent accidental shock.
2.4.1 Protecting Wire – Conduit Box
The AC wires to and from the load controller must be protected as required by code. This can be
done by using jacketed wires or by feeding the wires through conduit. A conduit box (MPX-CB) is
available that allows the AC conduit to be connected to the ACLD controller.
2.4.2 Wiring Requirements
• All conductors that are at risk for physical damage must be protected by conduit, tape, or
placed in a raceway.
• Always check for existing electrical, plumbing, or other areas of potential damage prior to
making cuts in structural surfaces or walls.
• AC overcurrent protection must be provided as part of the installation and be properly sized.
• Use only copper wires with a minimum temperature rating of 75°C (167°F).
• Always use properly rated circuit breakers. If using an electrical sub-panel, circuit breakers
can be moved from the main electrical panel to the sub-panel only if the breakers are also
listed to be installed in the sub-panel.
• Wiring must be no less than #10 AWG (5.3 mm 2 ) gauge copper wire and be approved for
the application (i.e., residential wiring).
• The wire sizes recommended in this manual are based on the ampacities given in Table
310.16 (in conduit) or Table 310.17 (in free air) of the NEC, ANSI/NFPA 70, for 75°C (167°F)
copper wire based on an ambient temperature of 30°C (86°F).
2.4.3 Wire Routing
Before connecting any wires, determine all wire routes to and from the load controller. Typical
routing scenarios are:
• Network communication cable from the inverter to the load controller.
• AC wiring from the inverter output to the load controller.
• AC wiring from the load controller to circuit protection (if not using the MMP enclosure)
•
AC wiring from the circuit protection (or MMP enclosure) to the AC sub-panel (i.e., dedicated
inverter circuits).
• AC output wiring from the load controller to the primary diversion load (which can be
confi gured to turn off).
• AC output wiring from the load controller to the secondary diversion load (which must be
confi gured to always be available and stay on).
• Ground wiring to and from the load controller.
• Remote control cable to the inverter.