Mike Holt's Illustrated Guide to Article 680 - Electrical Wiring Installation Guide
Mike Holt's Illustrated Guide to Article 680 is a great guide for understanding installation or electrical wiring for swimming pools, spas, hot tubs, and fountains.
Please note, this is included for Licensed Electrician information only. It is not to be utilized by the homeowner as all spas in the State of Minnesota require a licensed electrician for installation. Also note this guide was written in 2017. Always check local codes for up to date requirements.