You aren't going to wire 36 panels in series. The largest off grid pv charge controllers handle strings of up to 1000VDC. You create strings of a certain size and then start paralleling.

I don't think this setup uses microinvertersb because it is highly inefficient to charge a battery bank by first having ac power, convert to DC, them back to AC to run loads.

I highly doubt the person who was shocked was shocked from the DC side, more likely they touched an exposed 120v 15/20a circuit on the AC load side.