MIL-DTL-915/22 Types TSP and TSPA Shipboard Cable

Mil-Spec Military part number MIL-DTL-915/22 is comprised of two cable-type designations: TSP and TSPA. The cable is rated for 600 volts and can be categorized by the Telephone Identification Code using Method 3. All 915/22 cords are constructed with two conductors wired together in pairs. Each conductor is insulated with polyvinyl chloride (PVC) insulation. The selected number of pairs is then cabled using non-fibrous fillers. The cabling will start with the first pair and work outward, and a binder tape will be applied helically. The TSP cord will then be enclosed in a gray thermoplastic jacket. The TSPA cord will be constructed the same as the TSP cord, except it will have an additional braided metal armor. This cable is watertight and offers flexing service. Watertight cables can operate in a wide variety of situations, including through bulkheads and between decks.

What does the cable designation TSP mean?

In the cable designation for TSP, the letter T refers to twisted pairs, S pertains to flexing service, and P indicates the thermoplastic jacket.

What does the cable designation TSPA mean?

In the cable designation for TSP, the letter T refers to twisted pairs, S pertains to flexing service, P indicates the thermoplastic jacket, and A is associated with the braided metal armor.

M915/22 Construction:

• Conductors: Tin-coated 22 AWG copper with class K stranding
• Insulation: Polyvinyl Chloride (PVC)
• Jacket: Thermoplastic
• Shielding: (for TSPA only): Braided metal armor

M915/22 Ratings and Approvals

• Mil-Spec 915/22
• MIL-DTL-915
• Navy Shipboard Spec:
  • TSP (unshielded)
  • TSPA (shielded)
• 600 volts

Features and Benefits of M915/22 Cords

• Watertight cables can operate in a wide variety of situations, including through bulkheads and between decks.
• Polyvinyl chloride (PVC) is flame retardant, durable, tough, and resistant to abrasion, and can resist many chemicals including acids and oil.
• Thermoplastics are valued because of their extreme durability, resisting chipping, cracking, dents, dings, frays, or splintering. They also resist many chemicals including industrial cleaners and solvents, and they contain no VOCs, making them an environmentally sound solution.
• Portable cords with flexing service permit use in applications where repeated use may require flexing without damaging the cord’s internal conductors
• Armor-clad cables provide protection and durability in cases where electrical conduit, offsets, and conduit couplings are impractical. Additionally, metal-clad armor is corrosion-resistant, making it ideal for high-moisture locations.