Appendix A: Allowable Mounting System Loading
Tesla Compatible modules have been evaluated for design loads on the back surface (e.g., wind load) and on the front surface (e.g., wind and snow load)
UL 2703 Requirements:
PV Modules were evaluated at the following attachment spacings in order for Tesla Solar hardware to obtain load ratings using specified test procedures:
| ZS Span | ||||
|---|---|---|---|---|
| Module | Landscape | Portrait | ||
| Attachment Spacing | Load (PSF) | Attachment Spacing | Load (PSF) | |
|
Tesla T420S, T425S, T430S and T395H, T400H, T405H |
24" |
100 - front side; 72 - rear side |
24" |
16.7 - front side; 37.5 - rear side |
|
Q Cells Q.Pro-G4 where ### = 250-265 |
24" |
50 - front side; 85 - rear side |
24" |
50 - front side; 85 - rear side |
|
Q.Pro-G4.1 where ### = 270-325 |
||||
|
Q.Peak Duo BLK G5 where ### = 310-320 |
||||
|
Q.Peak Duo BLK G6+ where ### = 330-345 |
||||
|
Q.Peak Duo BLK ML-G10+/TS where ### = 395-415 |
24" |
100 - front side; 72 - rear side |
24" |
16.7 - front side; 37.5 - rear side |
Tesla Solar Hardware must be installed following all applicable instructions.
Listed by UL to UL 2703 for a mechanical load rating up to 100 psf downforce and up to 85 psf uplift. This racking system is Listed for fire performance, grounding and mounting of Listed PV modules where the combination of Listed module and Listed racking system has been evaluated.
| Allowable Module Design Loading** | |||||||
|---|---|---|---|---|---|---|---|
|
Tesla H-Series Tesla S-Series Hanwha ML-G10+/TS |
Long Side Mounting (Landscape) |
Short Side Mounting (Portrait) |
|||||
| Maxium Span / Cantilever [in]* | 72 / 24 | 48 / 16 | 39 / 13 | 24 / 8 | 24 / 4 | 48 / 16 | 24 / 8 |
| Design Load Pull [psf] (bottom side) | 30 | 50 | 50 | 85 | 85 | 20 | 42 |
| Design Load Push [psf] (top side) | 30 | 50 | 75 | 85 | 100 | 20 | 42 |
*maximum cantilever is always 1/3 of maximum span length
** Capacities in table are in addition to those covered by UL 2703.
| Allowable Hardware Component Design Loads* | |||||
|---|---|---|---|---|---|
| Component | Configuration | Uplift | Downforce |
Lateral |
|
| Tile Hook Assembly | Centered | 524 lbf (2330 N) | 472 lbf (2100 N) | 297 lbf (1320 N) | |
| Offset | 431 lbf (1920 N) | 447 lbf (1990 N) | 239 lbf (1060 N) | ||
| Spanner Bar | With or without Beam Splice | 5418 in-lbf (612 N-m) | 5364 in-lbf (606 N-m) | 2452 in-lbf (277 N-m) | |
| Cam Foot Assembly | any | 1924 lbf (8560 N) | 900 lbf (4000 N) |
┴ to Rail 341 lbf (1520 N) |
║ to Rail 859 lbf (3820 N) |
* Allowable loads based on attachment to framing members with a minimum specific gravity of 0.42.