Reverse polarity on sanyo panels

[sedgy34]

It won't work and you could possibly burn out the isolator switch

 

[Worcester]

10 panels in three strinmgs over three roofs - unless your using solaredge or micro-inverters, you'r going to have a problem with start up voltages - what is the proposed string configuration and inverter?

Also please give # of panels, orientation, elevation adn direction of each of the roofs and approx location, and you'll end up with a raneg of design proposals for you to consider!