The concept of equipotential grounding, in which substantial (green) grounding conductors
are used to connect all exposed conductive surfaces to a central grounding point
in a star configuration, was developed as a prime defensive measure against this new hazard.
Others championed the use of isolation transformers as the best way to reduce leakage
current in the ground circuits of the hospital’s electrical distribution system. Several
regulatory and standards-setting organizations began taking notice.