17:40 Wow! This video is very informative and the best video tutorial on the topic for me so far. I really appreciate it. Thanks for sharing it with us. Please can you do me a favour by using the same motor nameplate to make a video on how to calculate cable for three phase motor. Also; another major problem I am facing is determining how to know whether a motor is to be connected in star, delta or star delta... Can you also make a video on it. Please help me with answers to all these questions by making a video on it.. Thanks