cjack posted:No. You have to take the reading with a load on the power supply. Many of those wall worts are not regulated and are designed to put out stated voltage when properly loaded.
I plugged the building in and the floor lights worked. I do not know how to check the wall wart with a load on.
This is the wall wart purchased with the building. I plugged one of the wires to the building, floor lights worked, then while power was on the building I put the red wire into one of the other plugs and the touched the black wire to outside the same plug. The meter read 9.
Appreciate your help, I 'm just a slow learner
Thanks
Brent