Service fuses, meters, high-impedance shunt circuits, supply conductors for time switches, surge-protection capacitors, instrument transformers, lightning arresters, and circuits for emergency systems

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There must be no fusing in the high side, or primary; since the booster transformer is similar to a current transformer, if the fuse should blow, an extremely high voltage could be built up on the secondary side.

They will not distribute the load equally; one transformer will tend to assume more of the load than the other.

The high side of the transformer must be able to handle the approximate voltage of the line; the low side must have a voltage of approximately the value that you wish to boost the line voltage, and the low side must also have a current capacity that is sufficient to carry the line current.

It is when iron is subjected to a varying magnetic field, the magnetism lags the magnetizing force, due to the fact that iron has reluctance, or resistance, to changes in magnetic densities.

Power loss of the copper, eddy currents, and hysteresis losses.