We always have a great time working on Automation Notebook but this one was extra special as we hit our 40th issue! It’s always exciting to see another one come together after weeks of hard work. This month we took a look at enclosures in our panel builder checklist and our article on how to select and size enclosure thermal management systems. Brush up on your NEMA ratings and learn a few simple tricks to avoiding wiring errors. This issue is chock full of useful information to keep your systems running smoothly. As always, check out our brainteasers in the back of the issue for a midday jolt of brain power. We hope you enjoy!