A portable electrical energy power node is provided. The power node includes first and second input power terminals and first and second output power terminals. The input power terminals are adapted for receiving a source of electrical power and the output terminals are adopted for connecting to a load. A first power line connects the first input terminal to the first output terminal, a second power line connects the second input terminal to the input side of a circuit interrupter and a third power line connects the output side of the circuit interrupter to the second output terminal. The circuit interrupter selectively interrupts the connection between the second input terminal and the second output terminal in accordance with a fault sensor and a control unit.