Standards IEC 60364-7-712 " Requirements for Special Installations or Locations - Solar Photovoltaic (PV) Power Supply Systems" determine aplican en los sistemas de alimentación solar fotovoltaica (PV) establish disconnection and protection requirements on such a type of installations.
According to 712.51connection boxes must offer accesibility and maintenance safety while fitted according to IEC 60439-1.
Paragraph 712.53 settles obligation to install a switch disconnection on both sides (DC and AC) of the inverter.