May
28
How many watts are needed to make a soldering iron a worthwhile purchase?
15W is plenty for tiny wires, surface mount repair etc.
30W is good for up to about 18 guage wire, and more than enough to burn tiny wires
100W works well on 12 guage wires.
All of the above are worthwhile purchases. A temperature controlled solder station will cover this range.
(Also: Yahoo! Answers comes up trumps for once).