La sobrecarga neutra en el circuito derivado de un receptáculo se puede detectar mediante:
a. una lectura de menos de 2 V a tierra.
b. una lectura de más de 120 V a un conductor sin puesta a tierra.
c. una lectura de más de 2 V a tierra.
d. el voltaje de cambio de carga en el circuito.
c. una lectura de más de 2 V a tierra.
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