Our company uses SolarEdge inverters and we would like to lockout the DC portion prior to permission to operate from the utility company (Duke, FPL, TECO, etc). We've had some customers turn on their system before the power company, and want to prevent this. I suggested a standard "DO NOT OPERATE" tag and lock, but my boss is convinced we need something that states how it is illegal. As far as I know, it is not necessarily illegal, but they may receive a penalty from the power company.