3-Phase, AC Motor ElectricWhen 2 or more wires are twisted together, is a wire nut placed over the exposed wires? How are 2 separate wires properly connected?
Its common practice in the US to use wire nuts in motor terminal boxes. Its very unfortunate that they don't contain suitable terminals as the case in European motors, in fact wire nuts are not considered appropriate connections even in domestic applications in Europe. The problem with wire nuts, especially in motors that vibrate, is they offer little mechanical strength. My advise would be to find screw type connectors. They are often refered to as Euro connectors in companies that sell them such as Allied or Grainger. Many parts of East Asia also have motors without terminals and here they use crimp terminals and bolt them together followed by a procedure of taping. You may find this in larger motors in the US
