12V vs 120V Sign Lights

[A/A Fuel GTX]

Is there an advantage of low voltage over line voltage for LED sign light fixtures?

 

[kwired]

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]

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]

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.