Reduced Neutral

[wire4u73]

What are the stipulations for reducing the neutral conductor and is there a certain percentage that it cannot be reduced past?

 

[jumper]

220.61 is where I would start.

 

[augie47]

220.61 gives you the basics.
If it's a feeder neutral, 215.2 gives you a minimum

(sorry jumper, stepped on you)

 

[Dennis Alwon]

For a service look at 250.24(C)(1)