The 2-inch separation rule does not apply to which type of cable?

The 2-inch separation rule does not apply to which type of cable?

• A. Romex (metallic sheathed cable)
• B. Coaxial cable
• C. Armored cable (AC)
• D. Twin-axial cable

Answer: (D)

The test is about why some cables don’t require the 2-inch separation from other conductors. That rule exists to keep low-voltage signaling away from high-voltage power wiring to prevent interference and false readings. Twin-axial cable is built with two conductors inside a single jacket and, importantly, a shield around them. That shield provides strong isolation from nearby electrical noise, so you don’t need to keep that 2-inch gap. Other cable types don’t have the same shielding arrangement, so the standard separation guideline generally still applies to them.

The test is about why some cables don’t require the 2-inch separation from other conductors. That rule exists to keep low-voltage signaling away from high-voltage power wiring to prevent interference and false readings. Twin-axial cable is built with two conductors inside a single jacket and, importantly, a shield around them. That shield provides strong isolation from nearby electrical noise, so you don’t need to keep that 2-inch gap. Other cable types don’t have the same shielding arrangement, so the standard separation guideline generally still applies to them.