01/09/2026
Does achieving 0.5 Ω automatically mean your earthing system is safe?
Not necessarily.
A low earth resistance value is an important indicator—but it is not the only indicator of a properly engineered earthing system.
An earthing network can achieve an excellent resistance measurement while still exposing infrastructure to critical risks caused by:
• Inadequate equipotential bonding.
• High Touch Voltage.
• High Step Voltage.
• Poor fault current distribution.
• Excessive Ground Potential Rise (GPR).
These issues cannot be identified by resistance measurements alone.
Effective earthing design is not about pursuing the lowest possible number.
It's about ensuring that every component of the protection system works together to safeguard people, equipment, and critical infrastructure under real fault conditions.
At P*S, every earthing solution is engineered based on the complete electrical behavior of the system—not on a single measurement.
Because true protection is measured by performance when it matters most.
P*S
Professional... Try the Professionality.