Here are the specifications for each: Schedule 40: A thinner-walled conduit, Schedule 40 is used when there’s no chance of physical damage. It can be used above ground and underground in both ...

However, the circuits encountered in building wiring during a phase-to-ground fault condition that involves the conduit in and around the faulted circuit are subject to an appreciable increase in ...

Abstract: A NEED has been indicated in the electrical industry for information which will enable the design engineer to predict the magnitude of fault current that will flow in a circuit enclosed by ...