Available in hard copy and for download, NEMA ICS 61800-6 TR-2015 "Adjustable Speed Electrical Power Drive Systems, Part 6: Guide for Determination of Types of Load Duty and Corresponding Current Ratings" explains how to determine types of load duty and related current ratings for adjustable speed drive. This guide also provides clarification to users for application of NEMA member products for such industries as heating and air-conditioning, industrial automation, and machinery.