SureTest® circuit analyzers use patented technology to “look behind walls” to identify wiring problems that can lead to personal shock hazards, electrical fires, or equipment performance issues. Personal shock hazards stem from poor grounding, false grounds, and/or no ground fault protection. Electrical fires are primarily caused from arc faults and high resistance points that lead to glowing connections in the circuit wiring. And, equipment performance issues arise due to insufficient voltage available under load, poor ground impedance, and high ground-to-neu- tral voltage. In fact, it’s estimated that 80% of power quality performance issues are related to the faulty wiring issues stated above.