What is Megohmmeter?
A megohmmeter is a specialized instrument used by electricians to measure extremely high electrical resistance, typically in the range of millions of ohms (megohms). It’s primarily used to test the insulation quality of electrical components like wires, motors, transformers, and panel boards. Ensuring good insulation prevents current leakage and reduces the risk of short circuits or electrical shocks.
In both residential and commercial electrical systems, a megohmmeter is an essential safety tool. For example, during routine maintenance, an electrician might use a megohmmeter to verify that a building’s wiring insulation hasn’t deteriorated due to heat, moisture, or age. This helps prevent future failures and extends the lifespan of the electrical infrastructure. Its high-voltage output makes it capable of detecting even minor insulation breakdowns, ensuring system reliability and safety.
