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 rugged, digital ground resistance tester model 6470 performs grounding resistance, earth coupling measurement, soil resistivity and bonding tests. AEMC’s rugged, digital ground resistance ...

Vishay Milwaukee Resistor, part of Vishay Dale Electronics, is exhibiting its Neutral Grounding Resistors and other standard resistor products at this year’s IEEE PES T&D Conference & Exposition. The ...

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 ...