Branch circuit wiring faults cause more residential electrical fires than any other cause. Hidden problems and faults in the branch circuit can also result in electrocution and ultimate failure of highly sensitive electrical equipment. High-resistance connections such as a corroded or loose connection, improper installation or a bad slice in electrical distribution systems are overwhelmingly the culprit in many residential fires. Fire hazards occur when an electric current flows through the high resistance regions creating hotspots. Here are guidelines for testing branch circuit wiring.
Isolating High-Resistance Connections
The majority of receptacle and fixed wiring problems are hidden from visual inspection. A simple visual inspection in residential construction can help identify obvious wiring problems but fail to identify any loose wiring connection. The branch circuit testing equipment TASCO, Inc. provides will reveal a lot about the integrity of the circuit or quality of installation.
Voltage Drop Calculations
Voltage drop is the measure of how much the circuit voltage fluctuates when a load is applied. Accurate voltage drop measurements are achieved at no-load conditions. A digital multimeter or circuit analyzer can be used to calculate the voltage drop. While using a multimeter, all loads from the circuit should be removed. On the other hand, modern-day circuit analyzers can place a 15A load on the branch circuit without triggering any interruption.
Troubleshooting the Branch Circuit
Troubleshooting a branch circuit to identify the causes of high impedances within the system is imperative. It is a crucial step towards testing branch circuits.
Although testing and evaluating branch circuits is quite easy, it requires highly specialized electronic equipment that can be acquired from a specialized manufacturer like us. We guarantee quality and time-saving solutions for electrical test instruments and other trades.