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A system for mounting solar modules comprising a plurality of racks and clamps. Each rack has an inclined upper mounting surface to support one of the solar modules and an inclined lower mounting surface to support one of the other solar modules. Each upper mounting surface and lower mounting surfac

A system for mounting solar modules comprising a plurality of racks and clamps. Each rack has an inclined upper mounting surface to support one of the solar modules and an inclined lower mounting surface to support one of the other solar modules. Each upper mounting surface and lower mounting surface define a slot. One of the clamps slidably receivable by a slot of one of the upper mounting surfaces and configured to secure the one solar modules to the upper mounting surfaces and an other of the clamps slidably receivable by a slot of one of the lower mounting surfaces and configured to secure said one of the other solar modules to one of the lower mounting surfaces. Each rack has a tray having a first tower supporting the upper mounting surface and a second tower supporting the lower mounting surface.

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1. A system for mounting an array of rows of solar modules comprising: a plurality of racks, each rack having an inclined upper mounting surface adapted to support on a roof or other surface at least one of the solar modules along an angle relative to the roof or other surface and an inclined lower

1. A system for mounting an array of rows of solar modules comprising: a plurality of racks, each rack having an inclined upper mounting surface adapted to support on a roof or other surface at least one of the solar modules along an angle relative to the roof or other surface and an inclined lower mounting surface configured to support at least one of the other solar modules of one row along an angle relative to the roof or other surface and one other solar module of another row, each upper mounting surface and each lower mounting surface defining a slot, each rack being spaced from all of the other racks; anda plurality of clamps, one of the clamps slidably receivable by a respective slot of one of the upper mounting surfaces and configured to secure said at least one of the solar modules to said one of the upper mounting surfaces and another of the clamps slidably receivable by a respective slot of one of the lower mounting surfaces and configured to secure said at least one of the other solar modules to said one of the lower mounting surfaces such that said at least one of the solar modules and said at least one of the other solar modules are disposed in adjacent rows of the array;wherein each of the upper mounting surface and lower mounting surface has a front side, a rear side and a pair of lateral sides, the slot of the upper mounting surface extends from one of the lateral sides of the upper mounting surface to the other of the lateral sides of the upper mounting surface and the slot of the lower mounting surface extends from one of the lateral sides of the lower mounting surface to the other of the lateral sides of the lower mounting surface. 2. The system of claim 1 wherein each rack comprises a tray having a first tower supporting the upper mounting surface, a second tower supporting the lower mounting surface extending generally parallel to the first tower, and a base interconnecting the first tower and the second tower. 3. The system of claim 2 wherein the first and second towers extend generally perpendicular to the base and the upper mounting surface and lower mounting surface extend at an angle relative to the base. 4. The system of claim 2 wherein the base includes a plurality of ribs extending between the upper and lower mounting surface configured to elevate ballast placed on the base and to provide rigidity to the tray. 5. The system of claim 2 wherein at least one of the first tower and second tower includes at least one wall having a panel to increase rigidity of said one of the first tower and second tower. 6. The system of claim 2 wherein each of the first tower and second tower includes at least one wall having a panel to increase rigidity of a respective first tower and second tower. 7. The system of claim 2 wherein the first tower includes a wall including a panel defining a slot to receivingly engage a wire. 8. The system of claim 2 wherein the tray has a rounded peripheral edge. 9. The system of claim 2 wherein each clamp includes flanges extending in opposite directions for engaging a pair of adjacent solar modules. 10. The system of claim 2 wherein each clamp includes a first clamp member, a second clamp member and a clamp actuator configured to move the second clamp member between an engaged position and a disengaged position, the clamp being secured to one of the first tower and second tower when the second clamp is received by the slot of said one of the first tower and second tower and moved to the engaged position. 11. The system of claim 10 wherein the first tower includes a bottom side of the upper mounting surface and the second tower includes a bottom side of the lower mounting surface, the first clamp member including flanges extending in opposite directions for engaging a pair of adjacent solar modules and the second clamp member including a pair of mounting brackets for engaging the bottom surface of said one of the first tower and second tower when the second clamp member is moved to the engaged position. 12. The system of claim 2 wherein the first tower includes a bottom side of the upper mounting surface and each of the clamps includes a pair of mounting brackets, the first tower includes a pair of lateral side walls defining opposed ends of the slot of the first tower, the ends having a generally T-shaped cross section to slidingly receive the mounting brackets, the mounting brackets configured to engage the bottom side of the upper mounting surface to secure the clamp to the first tower. 13. The system of claim 2 wherein each of the second towers includes a bottom side of the lower mounting surface and each of the clamps includes a pair of mounting brackets, the second tower includes a pair of lateral side walls defining opposed ends of the slot of the second tower, the ends having a generally T-shaped cross section to slidingly receive the mounting brackets, the mounting brackets configured to engage the bottom side of the lower mounting surface to secure the clamp to the second tower. 14. The system of claim 1 wherein each of the upper and lower mounting surfaces includes a spacer having a pair of opposed sides, each opposed side for abutting a respective solar module to align a pair of the solar modules in a side-by-side manner on said each of the upper and lower mounting surfaces. 15. The system of claim 14 wherein each of the spacers includes two portions separated by a respective slot defined by each of the upper and lower mounting surfaces. 16. The system of claim 1 wherein each rack defines a plurality of holes for draining water from the rack. 17. The system of claim 1 wherein the upper mounting surface of each rack is configured to support one of the solar modules supported by the lower mounting surface of another rack. 18. The system of claim 1 wherein the upper mounting surface of each rack is configured to support a pair of the solar modules supported by the lower mounting surface of another rack. 19. The system of claim 1 wherein there are six of said racks adapted to support two of said solar modules and eight of said clamps configured to secure said two solar modules to said six racks. 20. The system of claim 1 wherein there are nine of said racks adapted to support two rows of two solar modules, and twelve of said clamps configured to secure said solar modules to said nine racks. 21. A system for mounting an array of rows of solar modules comprising: a plurality of racks, each rack having a first tower and a second tower, the first tower including an inclined upper mounting surface adapted to support on a roof or other surface at least one of the solar modules of one row along an angle relative to the roof or other surface, the second tower including an inclined lower mounting surface configured to support at least one of the other solar modules of another row along an angle, each upper mounting surface and lower mounting surface defining a slot each rack being spaced from all of the other racks; anda plurality of clamps, one of the clamps slidably receivable by a respective slot of one of the upper mounting surfaces and configured to secure a pair of the solar modules to said one of the upper mounting surfaces and an other of the clamps slidably receivable by a respective slot of one of the lower mounting surfaces and configured to secure an other pair of the other solar modules to said one of the lower mounting surfaces such that said at least one of the solar modules and said at least one of the other solar modules are disposed in adjacent rows of the array;wherein each of the upper mounting surface and lower mounting surface has a front side, a rear side and a pair of lateral sides, the slot of the upper mounting surface extends from one of the lateral sides of the upper mounting surface to the other of the lateral sides of the upper mounting surface and the slot of the lower mounting surface extends from one of the lateral sides of the lower mounting surface to the other of the lateral sides of the lower mounting surface. 22. The system of claim 21 wherein each of the upper and lower mounting surfaces includes a spacer having a pair of opposed sides, each opposed side for abutting a respective solar module to align the pair of the solar modules in a side-by-side manner on said upper mounting surface and aligning the other pair of solar modules in a side-by-side manner on the lower mounting surface. 23. The system of claim 22 wherein each of the spacers includes two portions separated by a respective slot defined by each of the upper and lower mounting surfaces. 24. The system of claim 1 wherein each of the upper and lower mounting surfaces includes a spacer having a pair of opposed sides, each opposed side extending generally perpendicular to a respective slot, each opposed side for abutting a respective solar module to align a pair of the solar modules in a side-by-side manner on said each of the upper and lower mounting surfaces. 25. The system of claim 24 wherein each of the spacers includes two portions separated by the respective slot defined by each of the upper and lower mounting surfaces.