ok - my mistake...I would recommend getting a decent surge arrestor, not one of those 6 outlet plug strips they only handle at best 1200-1800 joules of energy(around a 15 volt surge). Ditek makes an multi outlet device that handles upwards of 500 volts of surge @ 13500 amps and it comes with a connected equipment warranty. Anything plugged into it that is damaged by the device failing is covered. Simple to install.
DITEK Corp. - PRODUCT DETAILS
click on the "view data sheet" for all the specs. Also this will extend the life of your ground fault device and that of you motors/pumps. Reasonably priced too. This would eliminate any nuisance trips caused by spikes from the power company.(you live close to the substation and I would assume are subjected to frequent spikes/surges)