buck33k
Senior Member
- Location
- Washington state and North Carolina
I would like to learn more of dimming ballasts and their controls as I have not installed them.  Here is a photo of one I have in hand.  The low voltage wiring (violet and grey, 600v.) is routed outside of the j-box on the recessed can.
 
		
		
	
	
		 
	
 
The Universal web site shows switched line out (277v) to the ballast, and 0-10v. on a second set of conductors from the same switch to control dimming. (violet/grey). A note concerning this ballast reads, "can be wired as Class 1 or Class 2 circuit."
 
The can is configured with the low voltage control wires exiting the j-box. Is it assumed a cable will contain the LV controls? What is common?
	
		
			
		
		
	
				
			 
	The Universal web site shows switched line out (277v) to the ballast, and 0-10v. on a second set of conductors from the same switch to control dimming. (violet/grey). A note concerning this ballast reads, "can be wired as Class 1 or Class 2 circuit."
The can is configured with the low voltage control wires exiting the j-box. Is it assumed a cable will contain the LV controls? What is common?
 
				
 
 
		 
	