0-10V fluorescent dimmers and class 1/2 separation

[scotts0717]

I'm a bit confused about the use of 0-10V (aka "four wire") fluorescent ballasts with dimmers like these:

http://www.acuitybrandslighting.com/library/SYN/Documents/OtherDocuments/isd_bc_inst.pdf

http://www.leviton.com/OA_HTML/ibcG...zNgiLksQ&label=IBE&appName=IBE&minisite=10025

The 0-10V control circuit is a class 2 circuit while the switched hot circuit is class 1. How can these get installed without violating the requirements for separation of class 1 and class 2 circuits?

If anyone has experience with these types of dimmers, I'd appreciate your thoughts.

Thanks much.

 

[BullsnPyrs]

725.130 (A) exception 2 allows you to reclassify class 2 and 3 circuits as class 1 if you use class 1 wiring methods.