Richard, On Tue, 16 Jan 2007 20:11:38 +0800, Richard Prosser wrote: > You might want to factor in any live bodies in the room also - > esprcially if someone'd going to be there for an extended period. Yes, 200W for someone who's sat at a desk is about right. More if they're working hard! :-) Even if there aren't people who "live" in there it's worth allowing for a couple of people anyway - you don't want it to be so close that having people in there overheats the place. Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist