Small neutrals are pretty common around here for older services. A lot of the older houses which are K&T have #10 for the service entrance conductors and even some older 100A services have a #6 or even an #8 for a neutral. I guess they didn't put much emphasis on correct sizing of wire back then.

""sparky66wv-A #10 Neutral on a 60A Service... I've seen it all now...""
Well just keep livin' and I'm sure you'll see a lot more! [Linked Image]

Pauluk- a "noodle" is a neutral. Just a common slang word around here. [Linked Image]

glenn