4. INSTALLATION
Please be aware that the installation of this equipment carries the risk of electric shock. Conductors that are typically
grounded may become ungrounded and energized when a ground fault is detected.
4.1 NEP Parts Needed
For 12 AWG, you may have 5 units (10 Modules) per string. For 10AWG, you may have 7 Units (14
Modules) per string.
In addition to the micro inverters, PV modules, racking, and associated hardware, you’ll need the BDM-800 installation
kit. This kit includes the following items:
● AC trunk cable (one per micro)
● Protective end cap (one per branch circuit)
● Tail cable (one per branch circuit- 16’ long)
● Male connector (optional) Used to make extension cables
● BDG-256 (or BDG-256P3 for 3 phase)
The BDM-600 Ships six (6) to a box with each box measuring approximately 18” x 13.5” x 16”and weighing
57 lbs. A typical pallet contains 27 boxes.
4.2 Additional Parts and Tools Required
In addition to the PV modules, racking, and associated hardware, you’ll need the following parts:
● MLPE rail or frame attach clamps (2 per microinverter)
● AC junction boxes (multiple options possible)
● Cordgrip with locknut or strain relief fitting (one per branch circuit)
● A subpanel may be required for systems with multiple branch circuits
● Cable clips
● Sockets, wrenches, torque wrench, multimeter, small flat head screwdriver, and mirror with extension rod
● Lightning and surge suppressor (recommended)
4.3 Lightning Surge Suppression
● It's important to note that lightning strikes can cause damage to PV systems even without directly hitting the
equipment or building where the system is installed. The electrical grid can experience voltage spikes induced
by a nearby lightning strike, which can in turn damage the equipment. While the BDM-800 includes integrated
surge protection that is greater than that found in most string inverters, it is still possible for the protection to
be exceeded if the surge has sufficient energy, resulting in damage to the equipment.
● Because the NEP Limited Warranty does not cover "acts of God" such as lightning strikes, and given that these
strikes can occur anywhere, it is recommended to install surge protection as part of any solar installation. Any
surge protection devices should be installed in accordance with the vendor's instructions
4.4 Installation Procedure
Modified 04/13/2023 by JMB
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