Wiring Methods & MaterialsPregunta 68 de 120
A GFCI-protected 120-volt, 20-ampere residential branch circuit is direct buried in a yard. What is the minimum cover?
a.18 inches
b.6 inches
c.12 inches
d.24 inches
Explicación
Residential branch circuits rated 120 volts or less and 20 amperes or less that have GFCI protection may be buried with only 12 inches of cover, because a ground fault from a dig-in will clear immediately. Without GFCI protection the general 24-inch requirement applies, and the 6- and 18-inch values belong to metal and nonmetallic raceways.
Referencia Legal: 2023 NEC Table 300.5Practica las 120 preguntas gratis — sin registro.
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