Safety & code compliance
Industry Term

Fault Current

Fault current is abnormal current that flows during a short circuit or other electrical fault, and it must be accounted for in protection and equipment ratings.
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What does Fault Current mean?

Fault current is abnormal current that flows during a short circuit or other electrical fault, and it must be accounted for in protection and equipment ratings.

How is Fault Current used in solar design?

This term matters because PV systems must be safe for installers, owners, service teams, and first responders. Safety terminology may not be flashy, but it is what keeps the flashy parts from becoming sparky parts.