Grounding Grounding means to connect electrical equipment to a common reference ground or earth.  These three systems are Ungrounded Systems Resistance Grounded Systems Solidly Grounded Systems Types of grounding Solidly grounded system It is usually used in wye systems and this method is mostly used in the industrial, commercial and institutional power distribution system. in this method, the neutral is connected to the ground and thus it could ensure the neutral voltage is equal to the ground, by doing this method properly there won't be any phase to ground over-voltages. Reactance grounding In this method, a reactor is connected between the neutral point and the ground and the magnitude of the ground fault current can be reduced by changing the reactance. But this method is not used now because of the high transient voltage that appears during the ground fault condition Resonant grounding This method is also known as Peterson grounding because Peterson developed a coil which c