Before I went about an actual design, I searched the web to see if anyone had built a chandelier made from mason jars or similar. I came across several do-it-your-selfers. The best was posted by Our Hiding Place which led me to Pottery Barn's Exeter 16 Jar Pendant Chandelier. It's a really nice design and lists for $399. I was determined to customize mine and make it for less but I wanted detailed step-by-step instructions and I wasn't finding them anywhere.
First thing I did was to determine how much light I needed and what the electrical requirements would be. (Disclosure: I am not an electrician and am not recommending voltage or wiring. Each State has their own codes regarding home wiring. Also, the following instructions will not guide you on how to wire the ceiling leads and wall switch.)
The space where I planned on having the chandelier is over my dining/art table. (I built the table to again, suit my particular needs.) There is an existing electrical port in the ceiling that unfortunately, due to inept design is positioned too close to one wall restricting the width of a ceiling fixture. After identifying the maximum voltage I could then decide on the number of jars and matching bulb wattage. (Voltage, watts and amps are different. Again, I am not an electrician but am lucky enough to have a friend who is one hell of an incredible licensed electrician. If you don't know what you're doing, consult a licensed electrician.)
Based on my space and lighting needs, I decided on 10 jars with 25 watt bulbs. (Before you decide on the jars and the bulbs make sure the bulbs will fit inside the jars.) I tested different jars and bulbs first, before committing to the final design. I wanted to make sure that the heat generated from the bulbs wouldn't cause the jars to break or create condensation inside the jars. For the tests I purchased a simple lamp cord kit from the local hardware store. (It's a cord with a plug on one end and a socket on the other.) I already had a couple of mason jars on hand. My test proved successful so I ordered the rest of the needed parts. (See list on last Step or visit: http://brucekatlin.blogspot.com/ which includes links to vendors' sites.)