Pressure equalization between upper and lower surfaces of PV modules of an array of PV modules can be enhanced in several ways. Air gaps opening into the air volume, defined between the PV modules and the support surface, should be provided between adjacent PV modules and along the periphery of the array. The ratio of this air volume to the total area of the air gaps should be minimized. Peripheral wind deflectors should be used to minimize aerodynamic drag forces on the PV modules. The time to equalize pressure between the upper and lower surfaces of the PV modules should be maintained below, for example, 10-20 milliseconds. The displacement created by wind gusts should be limited to, for example, 2-5 millimeters or less. For inclined PV modules, rear air deflectors are advised for each PV module and side air deflectors are advised for the periphery of the array.

The disclosure describes various stackable corner protector configurations. The corner protectors can have curved lateral surfaces that allow the corner protectors to be decoupled from a photovoltaic module to which they are coupled to by rotating one end of the corner protectors away from the object. This removal process works even more efficiently with multiple stacked corner protectors as the stacked corner protectors can be concurrently removed from the object by rotating the stacked corner protectors away from the object together. The corner protector can also include one or more attachment features for securing the corner protector to the object. For example, when the corner protector is installed on a photovoltaic module, the attachment feature can engage a lip defined by a recess or channel of the photovoltaic module.

The disclosure describes various stackable corner protector configurations. The corner protectors can have curved lateral surfaces that allow the corner protectors to be decoupled from a photovoltaic module to which they are coupled to by rotating one end of the corner protectors away from the object. This removal process works even more efficiently with multiple stacked corner protectors as the stacked corner protectors can be concurrently removed from the object by rotating the stacked corner protectors away from the object together. The corner protector can also include one or more attachment features for securing the corner protector to the object. For example, when the corner protector is installed on a photovoltaic module, the attachment feature can engage a lip defined by a recess or channel of the photovoltaic module.

A spacer (100) for spacing two adjacent stacked solar modules (101a, 101b), the spacer (100) comprising: a body (108) having spaced opposed first and second edges (110, 109), the body (108) comprising an upper contact surface (111) for contact with an upper solar module (101a), and a lower contact surface (112) for contact with a lower solar module (101b); a first upper protrusion (114) arranged to bear against a frame (102) of the upper solar module (101a), the first upper protrusion (114) protruding upwardly from or proximate to the first edge (110) of the body (108) to a free end of the first upper protrusion (114); and a first lower protrusion (118) arranged to bear against a frame (102) of the lower solar module (101b), the first lower protrusion (118) protruding downwardly from or proximate to the first edge (110) of the body to a free end of the first lower protrusion (118), the first lower protrusion (118) offset from the first upper protrusion (114) in a direction along the first edge (110).

Fire protection systems for a rooftop solar panel installation with solar panels. The fire protection system has a group of water spray nozzles with a metric K-factor of 20 or less to discharge firefighting fluid to a coverage area of the rooftop solar panel installation, a fluid pipe system connecting the group of water spray nozzles to a fluid supply for providing firefighting fluid, a fire hazard detection system with at least one fire hazard detector configured to monitor the coverage area, and at least one detection control unit to generate an alarm signal upon detection of a fire hazard within the coverage area, a valve unit configured to control passage of the firefighting fluid from the fluid supply, wherein the coverage area is at least 500 m.sup.2, and the group of water spray nozzles is configured to discharge the firefighting fluid received from the fluid supply to the coverage area with a normalized fluid application rate of 15 mm/m.sup.2/min or less.

A photovoltaic (PV) module mounting system including a rail having a base wall and opposed first and second sidewalls extending outwardly therefrom. The first and the second sidewalls each have a flange extending outwardly therefrom. The flanges form a mounting surface adapted to support a PV module. The first and the second sidewalls define therebetween an open channel. A wire support is disposed between the first and second sidewalls and is adapted to support wires extending through the channel at a distance spaced from the base wall. The wire support divides the channel into a wireway and a water channeling portion. The wire support includes an opening therein to permit fluid communication between the wireway and the water channeling portion.

A photovoltaic (PV) module mounting system including a rail having a base wall and opposed first and second sidewalls extending outwardly therefrom. The first and the second sidewalls each have a flange extending outwardly therefrom. The flanges form a mounting surface adapted to support a PV module. The first and the second sidewalls define therebetween an open channel. A wire support is disposed between the first and second sidewalls and is adapted to support wires extending through the channel at a distance spaced from the base wall. The wire support divides the channel into a wireway and a water channeling portion. The wire support includes an opening therein to permit fluid communication between the wireway and the water channeling portion.

A method of assembling a solar array includes: roll-forming a first length of gutter material into a first gutter channel; roll-forming a second length of gutter material into a second gutter channel; arranging a solar panel between the first gutter channel and the second gutter channel; connecting a first bracket assembly to the solar panel and to a first gutter channel short side; connecting a second bracket assembly to the solar panel and to a second gutter channel long side; downwardly sloping the solar panel in a solar panel slope direction; downwardly sloping the first gutter channel along the first gutter channel longitudinal length in a chosen direction; and downwardly sloping the second gutter channel along the second gutter channel longitudinal length in the chosen direction.

A method of assembling a solar array includes: roll-forming a first length of gutter material into a first gutter channel; roll-forming a second length of gutter material into a second gutter channel; arranging a solar panel between the first gutter channel and the second gutter channel; connecting a first bracket assembly to the solar panel and to a first gutter channel short side; connecting a second bracket assembly to the solar panel and to a second gutter channel long side; downwardly sloping the solar panel in a solar panel slope direction; downwardly sloping the first gutter channel along the first gutter channel longitudinal length in a chosen direction; and downwardly sloping the second gutter channel along the second gutter channel longitudinal length in the chosen direction.

The disclosure describes various stackable corner protector configurations. The corner protectors can have curved lateral surfaces that allow the corner protectors to be decoupled from a photovoltaic module to which they are coupled to by rotating one end of the corner protectors away from the object. This removal process works even more efficiently with multiple stacked corner protectors as the stacked corner protectors can be concurrently removed from the object by rotating the stacked corner protectors away from the object together. The corner protector can also include one or more attachment features for securing the corner protector to the object. For example, when the corner protector is installed on a photovoltaic module, the attachment feature can engage a lip defined by a recess or channel of the photovoltaic module.