Replace the second paragraph by: PDSs covered by this standard are those installed in residential, commercial and industrial locations with the exception of traction applications, and electric vehicles. PDSs may be connected to either industrial or public power distribution networks. Industrial networks are supplied by a dedicated distribution transformer, which is usually adjacent to or inside the industrial location, and supplies only industrial customers. Industrial networks can also be supplied by their own electric generating equipment. On the other hand, PDSs can be directly connected to low-voltage public mains networks which also supply residential premises, and in which the neutral is generally earthed (grounded). In 9th paragraph, 2nd indent, replace reference to 3.2.6 by a reference to 3.2.7 In 10th paragraph, replace 3.2.3 to 3.2.5 by 3.2.4 to 3.2.6