I'd also advise getting a ball valve spigot on it. Invaluable. They're pretty easy to DIY if you have the tools.
My related question concerns burners: Does anyone anyone have information on BTUs vs. pot size? i.e. What's a recommended minimum BTU to bring, say, a 15 gallon kettle to a roiling boil in a reasonable amount of time?
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Edit:
Sorry, I was being lazy. But I'll do this in metrics because, sorry fellow Americans, metrics are just easier to work with.
It takes 1 calorie to raise 1 gram of water 1 degree. My brew kit requires a 33 liter boil for a 5 gallon batch. So 33,000 calories to raise 33 liters of water 1 degree.
If I assume 23C ambient temperature, I need to raise the water another 77C or 2,541,000 calories to get to boil at 100C.
1 calorie = 0.003969 BTU
So, I need 10,085 BTUs.
But that's just to get there. It makes no account for time nor for heat loss, which is substantial for low-BTU burners.
The point being, if you're boiling on your kitchen stove you might want to know how many BTUs your biggest burner is before deciding how big a brew kettle you can buy.