Solar photovoltaic module safety shutdown system

A solar photovoltaic module safety shutdown system, comprising:

• a photovoltaic module comprising a module-on switch operatively coupled thereto, the module-on switch and photovoltaic module configured to operatively couple with a first circuit, the module-on switch configured to operatively couple with a System-Monitor device, the System-Monitor device configured to operatively couple to the module-on switch through a second circuit and configured to operatively couple to the photovoltaic module and an alternating current (AC) main panelboard through the first circuit, wherein the first circuit is electrically isolated from the second circuit;
• and
• a module-off switch operatively coupled with the photovoltaic module and the module-on switch;
• wherein the System-Monitor device is configured to generate a System-On signal and to supply the System-On signal to the module-on switch through the second circuit;
• wherein there are no intermediate components coupled between the System-Monitor device and the module-on switch;
• wherein the module-on switch is configured to disable the photovoltaic module in response to the System-On signal not being received by the module-on switch from the System-Monitor device;
• and
• wherein the module-off switch is configured to disable the photovoltaic module through shorting the photovoltaic module in response to the System-on signal not being received by the module-on switch when the photovoltaic module is irradiated with light.

A solar photovoltaic module safety shutdown system, comprising:

• a first photovoltaic module comprising a first module-on switch and a first module-off switch, the first photovoltaic module operatively coupled with a first circuit, the first circuit operatively coupled to an alternating current (AC) main panelboard;
• a second photovoltaic module comprising a second module-on switch and a second module-off switch, the second photovoltaic module operatively coupled with the first photovoltaic module through the first circuit;
• a second circuit operatively coupled with the first module-on switch and with the second module-on switch, wherein the second circuit is electrically isolated from the first circuit;
• and
• a System-Monitor device operatively coupled with the first circuit, the second circuit, and the AC main panelboard, the System-Monitor device comprising a manual switch, the System-Monitor device configured to generate a System-On signal and to supply the System-On signal to the first module-on switch and to the second module-on switch through the second circuit when the manual switch is in an on state;
• wherein there are no intermediate components coupled between the System-Monitor device and the module-on switch;
• wherein the first module-on switch is configured to disable the first photovoltaic module when the System-On signal is not received by the first module-on switch from the second circuit;
• wherein the first module-off switch is configured to disable the first photovoltaic module through shorting the first photovoltaic module in response to the System-On signal not being received by the first module-on switch when the first photovoltaic module is irradiated with light;
• wherein the second module-on switch is configured to disable the second photovoltaic module when the System-On signal is not received by the second module-on switch from the second circuit;
• and
• wherein the second module-off switch is configured to disable the second photovoltaic module through shorting the second photovoltaic module in response to the System-On signal not being received by the second module-on switch when the second photovoltaic module is irradiated with light.