12V vs 120V Sign Lights

kwired

Electron manager
Location
NE Nebraska
Please clarify what you are asking. Typically the branch circuit to the sign (or light) is line voltage, but the LED driver with a low volt output may or may not be within the sign or light.
 

A/A Fuel GTX

Senior Member
Location
WI & AZ
I'm replacing some existing 12V sign lights. These lights have individual transformers within the canopies. Just wondering why someone would not just go with line voltage lights since 120V is right there and not have to mess with the transformers. FWIW, the new lights will be LED.
 

GoldDigger

Moderator
Staff member
Location
Placerville, CA, USA
Occupation
Retired PV System Designer
I'm replacing some existing 12V sign lights. These lights have individual transformers within the canopies. Just wondering why someone would not just go with line voltage lights since 120V is right there and not have to mess with the transformers. FWIW, the new lights will be LED.
Probably because the only way to get line voltage LEDs is to put 40-60 chips in series. That really limited your design options.

As for the old incandescents, the thicker filaments of LV bulbs let you run at a higher temperature for better color and efficiency.
 
Top