[Boatanchors] AC line plug polarity

[Barrie Smith]

Hello:

I'm working on an old tube-type amplifier, in hopes of using it as a speech-amplifier.

The unit doesn't have a line cord.  It has a terminal strip that takes care of all the ins-and-outs.

It was built in the 1940s, so the AC in is just two terminals.  I'm thinking of placing a three wire cord on it so that the chassis is grounded.

Fortunately, I have a schematic which shows one side of the AC switched, and the other side fused.  Neither side of the AC is grounded, although the fused side has a .1 cap to ground after the fuse.

The question is:  Where should I place the hot and neutral wires?

73, Barrie, W7ALW