[Tiara Open] Using Shore power for battery charger

[jsheerin]

My 2005 3600 Open is on land for the winter and i am trying to get power to my battery charger.  I have 2 30 amp connections on the boat.  I thought that if I connected the inputs to the 30amp on the boat to extension cord connected to a nearby outlet, that i would get power to the battery charger.  No luck so far. Batteries turned on, breakers on, am I missing something?  or is there just not enough power from a 15amp outlet to run the battery charger.  As you can tell, I'm far from an expert in this area...