100-Foot 1500-Watt Temporary String Light - E-400
https://www.tool-rank.com/media/listing/photos/thumbnail/300x300s/4f/13/ed/302_light_1227890183.jpg100' Temporary 1500 String Light10 Medium base Sockets100' 14/2 polarized safety striped CordUL and CUL Listed10 Plastic Protective Bulb Cages
From the Manufacturer The 100' 1500-watt temporary string light comes with a 14/2 polarized safety stripe cord. The cord has 10 medium base sockets with up to 150 watts per socket. The sockets are spaced every 10 feet with 10 heavy duty plastic protective bulb cages.
User reviews
Handy temp lights
I know, It is a lot more expensive than just wiring up regular cage lights, but these are so much more durable, just take them out of the truck and hang them up. They last so much longer, when your constantly taking them up and down, paying the price is worth it in the end. I run compact fluorescents in mine, so daisy chaining many of them is not really a problem. Home depot often offers a 50 foot version.
Ericson also makes some worthy string lights. Harder to find. Also has availble safety light strings.
http://ericson.thomasnet.com/category/construction-lighting?