According to 46 CFR, Subchapter J (Electrical Engineering), what statement is true concerning the use of twist-on connectors?
Twist-on connectors may be used for making joints in cables.
Twist-on connectors may be used to facilitate a conductor splice.
Twist-on connectors may be used to extend the length of a circuit.
Twist-on connectors may be used in enclosures as long as the insulating cap can be secured to prevent loosening due to vibration.