Installation Manual: MEMC Silvantis 60 cell PV Modules
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© Copyright 2012 MEMC Electronic Material
wArnIng: It is not recommended to mix connectors from different suppliers within the same string. This includes
connections at the inverter, combiner boxes, and modules.
• Always wire modules so that proper polarity is maintained. Avoid placing excessive tension on the cables.
• There is no limit to the maximum number of series strings that can be combined in parallel. however, when doing so, each
string must include overcurrent protection with a maximum rating of 15A. MEMC recommends the use of dC rated fuses or
overcurrent protection devices with the appropriate maximum voltage rating.
• do not connect modules directly to a parallel bus.
• The cross-sectional area of cable and the connector type must be selected to align with the overall system design and should
include the maximum short circuit current of the system, maximum operating temperatures, and cable run lengths.
• for field connections, use at a minimum #12 Awg/4 mm
2
wires insulated for a minimum of 85°C. use copper wire only.
5.3 groundIng
• The module frame includes several labeled grounding holes. These holes may not be used for any other purpose.
• MEMC recommends a Burndy BgBL-4 AL lay-in lug for grounding.
• only negative grounding circuits (negative polarity to ground) shall be used within the array design.
• Attach the grounding lug to the frame as follows:
Step 1: use stainless steel hardware.
Step 2: Place the grounding lug over the grounding hole on the exterior of the module frame.
Step 3: Place a star washer directly between the bottom of the grounding lug and the exterior surface of the frame.
Step 4: Place an M4 or #8-32 bolt through the lug, star washer and frame grounding hole.
Step 5: Secure the lug to the frame using a flat washer, split washer and M4 or #8-32 nut.
Step 6: Torque the bolt stack to approximately 1.5 n.m (or 1.1 foot pounds) to ensure the star washer scratches the
anodized frame.
