AEMC is introducing new portable ground resistance testers that are ideal for testing commercial, residential and light industrial grounding systems. The design simplifies the process and provides ...

Explanation: Section 250.53(A)(2) requires that a single ground rod be supplemented by another electrode. An exception allows a single rod if the resistance of this ...

AEMC's digital ground resistance tester Model 6470 performs grounding resistance, earth-coupling measurement, soil resistivity, and bonding tests with a measuring range from 0.01 ohm to 99,000 ohms.

Ideal Industries has introduced its new 61-796 Earth Ground Resistance Tester. Featuring large easy-to-read graphics on a high-contrast LCD, the 61-796 is lightweight and portable for field use. Using ...

Explanation: Section 250.53 of the NEC requires that any made electrode that has a resistance greater that 25 ohms be supplemented by another electrode. The NEC does not require that an electrode have ...