Extension Cords

Even though the load of each of the Fab4's may not require a 15 AMP extension cable, for safety I would use a 15 AMP extension cable minimum. I assume you are using these lights in a commercial building- hence use the heavier gauge cable. So here goes:
14 gauge = 15 amps maximum capacity.
12 gauge = 20 amps maximum capacity.
I always use at least 15 amp extension cables with my rig. The main feeder cable to my power distro center is 10 gauge. Some may call this overkill- but, cable is cheap- accidents are not.

i agree, just buy the heavy guage stuff, the last thing i want to worry about is a cord shorting out

Also don't use 50' cords if you can use 25'.
Using a shorter cord is in many ways like using a thicker one.
Both will also save you money on lamps by reducing voltage drops.
Consider that when looking at the cost of cords.
A pair of expensive lamps with sort lifetimes can cost $1/hour
or more so a few extra bucks on a cable that will last for years
is a good investment.

Ray

My other post my not havu been clear.
Long, thin power cables make your expensive lamps (bulbs) die sooner.

Ray