For long-distance transmission of power, in order to reduce losses in the wires by driving a low current at high voltage, we should use a step-up transformer (a) .
(That's at the beginning, to step-up the voltage for long-distance transmission. And then use a step-down transformer at the end, to reduce the voltage just before we pour it into the customer's house.)
Invisible gamma radiation does not transmit through Air or through contact thus standard precautions can encompasses more than person-to-person contamination.
Some Standard Precautions are
Hand Hygiene
Use Alcohol based hand disinfectant and always use gloves.
