Code Violation

Yes, there is a code violation according to the National Electrical Code (NEC) 2020:

NEC 300.17(C) states that a conduit shall not contain more than 3 current-carrying conductors of the same circuit unless the conductors are entirely within a raceway that is accessible for removing all the conductors at any time.In this case, the conduit contains 4 current-carrying conductors (3 hot wires and 1 neutral wire) of the same circuit, which violates the code requirement.

NEC 300.19(A) also states that the number of conductors permitted in a raceway shall not be such that the cross-sectional area of the conductors exceeds 40% of the interior cross-sectional area of the raceway.In this case, the cross-sectional area of the conductors is likely to exceed 40% of the interior cross-sectional area of the 1" conduit, especially if the wires are large gauge (#10 AWG).

Consequences of Violation

The presence of excessive conductors in a conduit can: Obstruct the future removal or installation of wires Increase the risk of wire damage and electrical faults Hinder proper heat dissipation and create a fire hazard

Corrective Action:

To comply with the code, you must: Use a larger conduit (e.g., 1.25" or 1.5") to accommodate the 4 conductors.* Separate the hot wires and neutral wire into different conduits. Flag for review