FIRST SOLAR
First Solar Series 6 CuRe Modules | USER GUIDE
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FIRST SOLAR, INC. | MPD-00600-06-C REV 1.0
Symmetrically secure the module using a minimum of four frame contact points regardless if mounted with
top clamps or with SpeedSlot clamps. Other mounting solutions not discussed in this User Guide (Such as -
asymmetric mounting, higher load ratings, alternative clamp geometry, etc.) may be permitted, but require
evaluation by First Solar (
technicalsupport@firstsolar.com
). First Solar reserves the right to reasonable
access to validate proper installation.
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The modules shall have a minimum spacing gap of 6 mm (0.24 in) between each other. Usable
junction box lead wire lengths accommodate spacing up to 245 mm (9.65 in) (assuming no
substructure interference).
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Do not use module short edge frame sides or center cross braces for mounting unless specifically
evaluated and approved by First Solar in writing.
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Do not modify the module frame in any way. This includes drilling additional holes, altering mounting
features (slots), or otherwise cutting, trimming, or shaping any part of the module frame.
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Module mounting structure support under clamps must maintain a minimum bearing area length of
35 mm (1.38 in) and maintain full frame bottom flange engagement under load.
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Module attachment hardware (i.e. clamps, bolts, etc.) must not contact the module glass.
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Install clamps to the torque stated by the mounting hardware manufacturer.
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Mounting clamps certified/designed to electrically bond and/or ground the module frame are
allowed when used in accordance with the clamp manufacturer’s instructions.
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The maximum clamp force shall not exceed 5500 N for either top or SpeedSlot clamps.
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Minor clamp deformation under load may be acceptable as long as clamping force is maintained
and the deformation does not contribute to a weakening of the clamp or dislodgement of the
module.
Series 6 CuRe modules of model types of FS-6XXX-C-I / FS-6XXXA-C-I (sometimes referred to as Series 6
CuRe interior modules) have a reduced mechanical design load as allowed under its UL 61730 listing,
depicted in Table 4. These modules are identified by “Reduced mechanical design load” wording on the
module nameplate label.
Many project designs will choose to incorporate Series 6 CuRe model types FS-6XXX-C-I / FS-6XXXA-C-I
either in full, or in zoned portions of an array combined with Series 6 CuRe model types FS-6XXX-C / FS-
6XXXA-C in other zones. For these mixed design cases, use the following guidance:
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The SpeedSlot mounting interface with universally consistent interface dimensions for all Series 6
CuRe modules is preferred in order to avoid managing the different top clamp height dimensions
between the different Series 6 CuRe model types.
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The Structural Engineer of Record must utilize the weight specification of the FS-6XXX-C / FS-6XXXA-
C model types from Table 3 for structural racking design, top-of-pile calculations, and post design
calculations for all array positions.
It is recommended all array positions be designed to mechanically accommodate the FS-6XXX-C / FS-6XXXA-
C model types, given their ability to be utilized in all array zones. For the same reason, First Solar will
typically provide these FS-6XXX-C / FS-6XXXA-C model types as spares and/or warranty replacements.
