139. In accordance with 46 CFR Subchapter J (Electrical Engineering), which of the following electrical repairs is permitted?

Splice a damaged conductor with twist-on connectors if the insulated cap is firmly secured to prevent loosening due to vibration.
Splice a flexible cord or cable with twist-on connectors if smaller than 18 AWG.
Connect a flexible cord or cable to a fitting with so that tension is not transmitted to joints or terminal screws.
Extend the length of a circuit with twist-on connectors if in an enclosure and wrapped securely with insulating tape.

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