I am running Antminers off a genset and I have a surge protector installed on the panelboard to protect the Antminers and PSU's in case of a surge. I am wondering if surge protection is really needed? Maybe the APW3++ PSU's have adequate protection in place in case of a surge?

Being a genset, I'm not sure what kind of scenarios may require a surge protector, lightning? Maybe if half the mining load drops and there's a voltage spike?