The continuous neutral-current rating be for an autotransformer used to create a three-phase, it must be sufficient to handle the maximum possible neutral unbalanced load. 450.5.
<h3 /><h3>What is meant by autotransformer?</h3>
A grounding autotransformer is used to create a three-phase, 4-wire distribution system from a three-phase, 3-wire ungrounded system.
A three-phase autotransformer is a special type in which common winding is shared by the high voltage and low voltage. Three-phase AC is supplied at primary and output is collected at secondary. Three phase autotransformer is used for such applications where a small voltage is used in the distribution system.
Autotransformers are frequently used in power applications to interconnect systems operating at different voltage classes, for example, 132 kV to 66 kV for transmission. Another application in industry is to adapt machinery built (for example) for 480 V supplies to operate on a 600 V supply.
To learn more about autotransformers refer to:
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Answer: Speciality store
Explanation: These are retail stores that offer specialised goods, and these goods can be different, meaning not just a specialised liquor store, but a specialised store of any good, say, baby food. Such shops usually have discounts and they are characterised by small differences between products, i.e. narrow variety. Also, these stores offer variety within the category of products they sell, hence a wide selection of similar products. So whether a store is specialised is not determined by the type of product being sold, but by the breadth of choice within the product category.
