Primary distribution voltages range from 4 kV to 35 kV phase-to-phase (2. 4 kV to 20 kV phase-to-neutral) Only large consumers are fed directly from distribution voltages; most utility customers are connected to a transformer, which reduces the distribution. Nearly all spot networks in North America function at a 480Y/277-V secondary voltage. High service dependability and operational flexibility are attained with a spot network supplied by two or more primary feeds via network transformers. Primary distribution lines carry this medium voltage power to distribution transformers located near the customer's. What is considered to be the voltage level for a primary distribution substation varies country by country and depends on the whole electricity network structure and extent and historical and organizational issues. To give some kind of a picture of the volt-age levels, below is an example about the. Utilities may have some control over and access to the energy stored in electric vehicles attached to the grid. The outgoing line from the low-voltage end of the transformer is 0. 4kV to the distribution cabinet (primary distribution cabinet), then the outgoing line is led to the distribution box (secondary distribution box) in each building, and finally the outgoing line is led to the distribution cabinet. From the transformer's low-voltage side (0.
