Insulators prevent current from flowing where it should not, protecting persons and equipment.
They protect equipment by isolating live wires which prevents short circuits and electrical device damage.
Insulators reduce power loss by reducing current leakage which helps to maintain efficient power transmission.
Insulators in transmission lines hold conductors in place & prevent them from coming into touch with poles or towers.
High-quality insulators (such as porcelain or composite materials) can tolerate rain, heat & pollution.
Insulators last a long time and require minimal maintenance.
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They provide reliable insulation at a lower cost than system failures or accidents.