To answer this one would have to know if by "100 watt" you mean actual power used by the LED lamp or the wattage equivalence to an incandescent lamp of the same brightness. In the second case (which is the most likely) you would have to read the package that the LED lamp came in to get actual power used.
Depending on the efficiency of the flood lights, you should be able to safely run one 500 watt flood light on a 13 amp plug. Keep in mind that it's important not to exceed the amp limit to prevent overheating and potential fire hazards.
# 2-awg
About 0.6 amps for a 12v 21w bulb
amps equals watts divided by volts.
1100 watts or about ten amps then another 3 to 4 amps for turn table light and fan
The amps drawn by a 65 watt light bulb should be 65/120 or 0.54167. This fraction of an ampere may be restated as 541.67 milli-amps.
Amps can not give you a kilowatt with out a voltage being applied to the question. Watts = Amps x Volts. Amps = 1000/ Volts.
10 guage
Depends on the size of the LED light and the voltage applied. An example is an LED 24 volt globe light that pulls 8 watts which draw 0.333333 amps. Take an LED 120 volt light bulb draws 12 watts and will pull 0.1 amps. The same bulb at 240 volts wil draw 0.05 amps. it really depends on the watts and voltage applied. An average would be about 0.1 amps.
Yes amps from Infinity, Sony and many others have led's built in.
You need the volts times the amps to equal 100 Watts. On 12 v that is 8.33 amps, or on 200 v is it 0.5 amps.
By the lighting load it carries, in amps.