I finally got my reliance transfer box on the wall. I bought the plug to go from the in/out power plug on the Apex 300 to the reliance transfer box. Problem is I have no power on any of the 3 plugs on the left side of the Apex 300. I checked all 3 plugs the in/out plug, the 30 amp out and the 50 amp out…no power on any of the plugs. Checked the pop out breaker it is ok… not popped. I’m at a loss what could be wrong. I checked the 3 plugs with a multi meter…nothing there. Thanks for any help