Earth Trip keeps cutting out

[Nick]

The experience/damage you get depends on a load of things - how low the impedance path to ground is (are you sweaty, barefoot and standing in a tub of salty water), the frequency of the zap (if it doesn't kill you, RF shocks can do subtle long-term nerve damage etc.), and how the the current passes through your body to ground, specifically : is the earth path via the left side of your chest? Other stuff too...

Just be safe.