Secondary wiring: used to control, measure, protect, and indicate signals for the primary wiring. Primary distribution systems consist of feeders that deliver power from distribution substations to distribution transformers. At this. rence design for data centers (Reference Design) will be available free of charge. The Reference Design is provided 'As Is' without any express or implied warranty of any kind, including but not limited to any wa customer or any consulting third party addressing our standard possible solutions. ABB. Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser. THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF. Secondary voltage regulation is improved by paralleled transformers. The following is a detailed introduction to it: - **Familiarize with Drawings**: Carefully study relevant drawing materials such as electrical schematic. Stud Terminals are used in control cabinet construction and in the area of drive motors as connection terminals for high rated currents of up to 240 mm². FTG offers a wide range of flexible wiring systems.