GMS’s Portable Power Distribution Centers have been designed to be the easiest power box you will ever plug in. GMS is focused on the customer’s needs. Every power box has been engineered to provide you the very most electrical protection while offering numerous choices for power options. All 20 Amp outlets are GFCI equipped and the enclosure is insulated (NOT METAL) to protect against personal electric shock. All power boxes come standard with the correct 30 Amp overcurrent protection. All power boxes are UL Listed in the USA and Canada. It is our goal at GMS to provide you with simple power solutions that will save you time and exceed your expectations.