I'm in the middle of a project to redo the bathroom. I had disconnected the old light about two weeks ago. I tried to install the new lighting yesterday and nothing happened. There are three wires coming out of the box the ground, a white and a red. I matched the ground to ground, the white to white and the red to black. Once everything was in place I turned back on the circuit, flipped the switch and viola! NOTHING!! I took the lighting down, got out my trusty multimeter to see if power was getting to the wires but I didn't get any reading. To double check I checked the power to the switch and it was there. Is there something that I did wrong or is there something that I am forgetting? Please help.

In my camper I have a 30amp main breaker and then a 20amp breaker and two 15amp breakers. It's fed from the middle of the campgroud with a 20 amp breaker so needless to say, if i have an overload, none of my breakers kick, the one out on the pole does and i have to have someone come down and unlock the box and reset it. If i change my 30 amp main to a 20amp, will my 20amp kick before the one out on the pole or should i change all of them to 15 amp breakers? Thank for your help. Joe