That is a 12V DC flood light. you cannot just hook it up to a plug. you need to hook it up to a power supply. You overpaid too. return it if u can and get an AC model.
As for the 30" depth, let me get out my camera and show you a 30watt over my 125, 25" ish depth. I have no meter though so it will just be to show how bright the thing is.
Oy! I went to the hardware store with the light and asked them what I should do and they sold me a straight blade plug to hook it up to. Once I got it wired correctly, super-double-checking the right wires went to the right part, I plugged it in to see, there was a spark, and nothing happened.
This is the
they sold me.
The cardboard box the LED came in says 10.5 watt LED waterproof outdoor light 10-30 volt DC, 3701WH-30V DC.
Did I ruin my light? What's the proper thing for me to do now?