In the step-down transformer secondary voltage will be lesser than its primary electrical energy or voltage. This type of transformer specially designed to reduce the electrical energy to the secondary winding from the primary winding. In these steps down transformer the electrical energy will be appropriate to it. This changes high-voltage and low-current power into low-current and high-current power being as a step-down entity. In the secondary winding the larger-gauge cable is used and it is essential due to the raise in power. At the same time as the primary winding that don't require carry out much current might be prepared out of smaller-gauge cable. A step-down can function as a step-up transformer and vice-versa. Often the construction of the transformers will be in such a way that it is not understandable which cables direct to the primary winding and which go ahead to the secondary winding.

In this step-down transformer, as verified by the high rotate calculation of the primary winding and the low down rotate count of the secondary windings. If at all you are in doubt than it is probably possible to function either of these transformer types backwards to carry out the contradictory function.