I liked this article. I'm a lil new to all of this, so I did use extension cord at first. I have two heat Lamps in my coop, but have now hard wired my coop. The heat lamps are secured because as mentioned, the clamps can come loose. I only turn the lamps on when its gonna be 32 degree's or less, at night, then I'll leave them on until temp's get up to about 50 degree's. I live in South texas, so I don't get as cold as most of yall, but I do wanna keep my Hen's comfortable so that they can lay all Winter long. 