Practice question

What type of wire is used for inductive loop detector installations in pavement?

  1. Standard THHN building wire
  2. #14 AWG stranded or solid cross-linked polyethylene (XLPE) insulated loop wire
  3. Bare copper wire
  4. Coaxial cable

Answer: B — #14 AWG stranded or solid cross-linked polyethylene (XLPE) insulated loop wire

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