[Papa1]

Hi
 My name is Bob Allen and I am a first time member. I am looking for some help with a little problem I have just discovered I have.
 Here is my problem, I had to replace my power cord as well as some tubes. The problem was with power cord instructions, they said that the white wire was the neutral and the black wire was the hot, here’s where my confusion came in. I’m sure that you all know that they didn’t have neutral or hot wires in the old radios,
so my question is simple how do I find out which one is hot and which one is neutral.
I can post a picture of where the power cord is attached if that will help.
Help Help
Any advice would be greatly appreciated 
Thanks 
Bob Allen