What is the largest conductor permitted in 3/8" flexible conduit?

The largest conductor permitted in 3/8" flexible conduit is 10 AWG. This is based on the NEC (National Electrical Code) guidelines that specify the allowable conductor sizes that can fit within different conduit types and sizes, ensuring safe and efficient electrical installations.

In flexible conduit, the inner diameter limits the number and size of conductors that can be installed without risking overheating, mechanical damage, or electrical interference. For 3/8" flexible conduit, 10 AWG is the maximum size that can be typically accommodated while still allowing for safe and compliant installations.

Using conductors larger than 10 AWG in this type of conduit could lead to issues such as difficulty in pulling the conductors through the conduit and potential for exceeding the fill capacity, which could violate electrical code regulations and compromise safety. Understanding these parameters is essential for electricians to ensure that installations adhere to regulatory standards and to avoid potential hazards.