The gfci breakers pop all the time .
The home made aluminum box 4 ways, will pop also if the box gets wet .
I run a gas compressor so no problem there .
I have a plastic tool box that we close our 4way and plugs in so they don't get wet .
tape your pugs together at the tool .
A sawzall Will ground out if it is wet and, it touches the ground .
The skill saw will pop the breaker if it hits the ground .
We hang the saws on the saw horse .
I hot wire a 12 g wire into the panel and use gfi breakers on the end of the plug , or use a gfi breaker in the panel , with reg outlets in the box .
Back in the day, we would just wire hot off the panel with a reg breaker and go for it . If we where soaked we would get zapped .
No one died, but you could get knocked on your ass.
john