Do they have any 120v power? If not, might be the surge protector. We all know how they work if it's the Progrssive Industries EMS. What exactly did they have installed? The PI EMS will shut power off when too low, too high of voltage, ground fault, or any other issue with pedestal power.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)