i did my own install hence why it is stand alone. Not a single wire is connected to the house "accept if i need to charge the batteries from a plug" It doesn't look very well done but it is fused and safe on every level. That i made sure of. i think the problem is people hear about electric fires, electrocution and numbers like 5000 Volts and 200 Amps and hell it even scare me until i did my own install. Now i know the wires i used was totally over kill for the application and i never needed a total battery capacity of over 1000 amps