I especially liked the statement, "as many as your circuit can hold"...... That would leave an unsafe condition, as MOST house circuits are rated at 15 amps, wired with 14/2 Romex. One needs to look at the electrical code if they are unfamiliar with it. A circuit rated at 15 amps will normally only be allowed to have 7 outlets on it. The best way is to compute the actual draw of the shop lights and design their circuit based on that. One also needs to take into consideration that when first turned on, there is a greater current draw than after they've been running for a minute. Hopefully, we'll read about some DUmmie whose house has burned down due to an electrical fire.