#14 switchlegs on a 20A light circuit

[jumper]

Assuming NM cable, the parts that are #12 have a #12 ground - to rephrase: do the parts that are #14 (the switch legs) ALSO need to be #12 ground?

No.

 

[JFletcher]

They revised it and took out the voltage drop clause.

(B) Increased in Size. Where ungrounded conductors are
increased in size from the minimum size that has sufficient
ampacity for the intended installation, wire-type equipment
grounding conductors, where installed, shall be increased in
size proportionately according to the circular mil area of
the ungrounded conductors

Okay, so #14 and #12 mixed on a 15A breaker are okay so long as the #12 portion has a #12 ground

 

[kwired]

And where 14 AWG is allowed to be on 20+ amp overcurrent device (think motors, air conditioning, etc.) the EGC never needs to be larger then the ungrounded conductors.

 

[Daniel malack]

And where 14 AWG is allowed to be on 20+ amp overcurrent device (think motors, air conditioning, etc.) the EGC never needs to be larger then the ungrounded conductors.

Yep! Yep!

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