My main service panel is 200 amps and has only 2 black wires coming in, there is no neutral wire like I was told is commonly how it should be. All neutral and ground wires for the individual circuits are connected to the same bar.
My question is in regards to a sub panel that is detached from the main house, the sub panel was already installed when I bought the house. The sub panel has 2 hot wires coming in the top and a ground. All breakers in the sub panel connect their neutral wire and their ground wire to the same bar. My understanding is that if your main panel has the neutral and ground wires bounded then the sub panel must not be. In my case both the main panel has the neutral and ground wire on the same bar, AND the sub panel has neutral and ground on the same bar. Is this a problem? If I have a fault in my neutral will the ground wire be electrified?