Quick and Accurate Measurements with the Vanguard Auto-Ohm 100 Ampere Low Resistance Ohmmeter
It is not enough to visually inspect electrical for bad connections. There are instances that the in between of the terminal joint is corroded. To confirm the integrity of the connection, you must measure its resistance to ensure a good connection. Terminals with corroded or degraded connection can cause electrical loss which is dissipated as heat. If not addressed immediately, the terminal may eventually fail.
If you need a reliable MicroOhmmeter, you might be interested in the Vanguard Auto-Ohm 100 Ampere Automatic DLRO. This tester has a variable output test voltage of 10 Amperes up to 100 Amperes which makes is suitable for most low resistance measurements. It features a ramped current true DC output which reduces magnetic spikes induced into current transformers when testing circuit breakers. This feature helps prevent the risk of tripping a bus differential relay that might affect the readings. You also do not need to calculate for lead resistance offsets because it is already automatically compensated to ensure accurate resistance readings.