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Product

UL 1424 / NEC Article 760 Fire Alarm Cables300 V UL 1424NFPA 262 PlenumNEC Article 760

FPLP Plenum Fire Alarm Cable300 V UL 1424 / NFPA 262 plenum-rated power-limited fire alarm cable (18–12 AWG)

Type FPLP (Power-Limited Fire Alarm Plenum Cable) is engineered to UL 1424 and NEC Article 760 for installation inside air-handling plenums, raised floors and environmental return-air ceiling ducts without conduit, passing the rigorous NFPA 262 (UL 910) Steine

NFPA 262 Plenum
UL 1424 / NEC 760
Unshielded / Foil
Order designation
FPLP 16/2 Unshielded
Outer Ø ≈
4.5 mm
Copper weight
25 kg/km
Total weight ≈
38 kg/km
Min. bend R
36 mm
All sizes (13)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Voltage rating
300 V
Power-limited fire alarm (NEC 760)
Flame & smoke
NFPA 262 (UL 910
Flame ≤5 ft · peak optical smoke ≤0.50
Conductor range
18 to 12 AWG
Solid bare annealed copper
Insulation
FEP / Low-Smoke
Fluoropolymer or low-smoke compound
Operating temp
0 to +75 °C
Up to +150 °C on FEP plenum grades
Min. bend radius
8 × cable OD
Plenum ceiling & J-hook routing

Typical values for this cable type, based on UL 1424 / NFPA 70 (NEC Art. 760) — confirmed in the datasheet and quotation for your order.

Application fit

Is FPLP right for your machine?

Required by NEC Article 760.154(A) wherever fire alarm SLC loops, NAC horn/strobe circuits, voice evacuation audio lines or smoke detector buses run directly through return-air ceiling plenums.

Fixed installation

Suitable

Approved for open routing on J-hooks, bridal rings and cable trays inside HVAC return-air plenums.

Switchgear & control cabinet wiring

Suitable

Direct termination to UL 864 Fire Alarm Control Panels (FACP), NAC extenders and voice amplifiers.

Free-hanging vertical run

Suitable

Substitutes for lower-hierarchy FPLR (riser) and FPL (general) cables across all building zones.

Motorised monospiral reel

Not suitable

Solid ASTM B3 bare copper conductors are strictly for stationary building installation.

S07HXCHX-F screened flex
Typical machinesCommercial office & HVAC plenumsData centres & raised floorsHospitals & universitiesAirports & convention centresHigh-rise UL/NFPA life safety

Construction

Layer by layer

Solid bare copper conductor (ASTM B3, 18–12 AWG) + FEP/low-smoke plenum insulation + optional 100 % Al-Mylar shield with tinned copper drain wire + red low-smoke plenum outer jacket + ripcord.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Solid bare copper conductorSolid annealed uncoated copper (18, 16, 14 or 12 AWG) per ASTM B3ASTM B3
2Plenum low-smoke insulationFluorinated ethylene propylene (FEP) or low-smoke flame-retardant plenum compoundUL 1424
3Foil shield + drain (shielded types)100 % coverage aluminum/polyester tape with 20–24 AWG stranded tinned copper drain wireUL 1424
4Low-smoke plenum jacketNFPA 262 compliant low-smoke flame-retardant PVDF or LS-PVC jacket with nylon ripcord, Fire Alarm RedUL 1424

FPLP Unshielded

2C and 4C unshielded cabled or twisted pairs for NAC horn/strobe circuits and conventional detection.

FPLP Overall Foil Shielded (OAS)

100 % Al-Mylar foil shield + tinned copper drain wire for addressable SLC data loops and 25/70 Vrms voice evac.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL 1424 / NFPA 70 (NEC Art. 760). Values for your order are confirmed in the datasheet and quotation.

Electrical

NEC / UL voltage rating
300 V rms (power-limited fire alarm)
Dielectric withstand test
1500 V AC for 1 minute
Nominal capacitance (18 AWG)
≈82 pF/m unshielded · ≈145 pF/m shielded

Thermal

UL temperature rating
75 °C (low-smoke alloy) / 150 °C (FEP)
Operating temperature range
0 °C to +75 °C (up to +150 °C FEP)

Mechanical

Min. installation bend radius
8 × cable OD (unshielded) · 10 × OD (shielded)
Ripcord
Integral high-tensile nylon ripcord under jacket

Resistance

Steiner Tunnel plenum test
NFPA 262 / UL 910 (flame travel ≤1.52 m, peak optical smoke ≤0.50, avg ≤0.15)
Substitution hierarchy
Permitted to substitute for FPLR, FPL, CMP, CMR, CL3P, CL2P per NEC 760.154

Reference standards

Safety & listing standard
UL 1424 Type FPLP
Installation code
NFPA 70 (NEC Article 760) & NFPA 72

Identification

Conductor colour code
2C: Black, Red · 4C: Black, Red, Brown, Blue (or Green/Yellow)
Jacket colour
Fire Alarm Red

Sizes

13 standard configurations (FPLP)

Nominal dimensions, masses and electrical ratings for FPLP according to UL 1424 / NFPA 70 (NEC Art. 760).

Dimensions & masses
DesignationAWG & CoresArea mm²Outer Ø ≈
mm		Copper
kg/km		Total weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
FPLP standard series
FPLP 18/2 Unshielded2C × 18 AWG0.82 mm²3.9162631
FPLP 18/4 Unshielded4C × 18 AWG0.82 mm²4.6314537
FPLP 16/2 Unshielded2C × 16 AWG1.31 mm²4.5253836
FPLP 16/4 Unshielded4C × 16 AWG1.31 mm²5.3506642
FPLP 14/2 Unshielded2C × 14 AWG2.08 mm²5.4405643
FPLP 14/4 Unshielded4C × 14 AWG2.08 mm²6.47910251
FPLP 12/2 Unshielded2C × 12 AWG3.31 mm²6.3638450
FPLP 18/2 Shielded OAS2C × 18 AWG OAS0.82 mm²4.1193033
FPLP 18/4 Shielded OAS4C × 18 AWG OAS0.82 mm²4.8354938
FPLP 16/2 Shielded OAS2C × 16 AWG OAS1.31 mm²4.7284238
FPLP 16/4 Shielded OAS4C × 16 AWG OAS1.31 mm²5.5537144
FPLP 14/2 Shielded OAS2C × 14 AWG OAS2.08 mm²5.6436145
FPLP 12/2 Shielded OAS2C × 12 AWG OAS3.31 mm²6.5679052
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Nominal outer diameters and weights are subject to manufacturing tolerances per UL 1424 / NFPA 70 (NEC Art. 760).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
1500 V AC dielectric test & spark testZero insulation breakdown per UL 1424100 % of reels
DC conductor resistance & continuityMeets ASTM B3 solid copper limits at 20 °C100 % of reels
Sample tests
NFPA 262 (UL 910) Steiner Tunnel plenum testMax flame spread ≤5.0 ft (1.52 m), peak optical smoke density ≤0.50, average ≤0.15UL Type FPLP listing

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

UL 1424 Type FPLPNFPA 262 (UL 910) PlenumNFPA 70 (NEC Article 760)NFPA 72 National Fire Alarm CodeRoHS 3 Compliant

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX E-FILE 16 AWG 2C SHIELDED (UL) TYPE FPLP OR CL3P 75C SUN RES NFPA 262 [foot/meter mark]
Delivery form
Fumigated export wooden drums or shrink-wrapped coils
Standard drum lengths
500 m · 1000 m standard drums (cut lengths on request)
MOQ
100 m (stock sizes) · 300–500 m (production)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFFPLP Plenum Fire Alarm Cable – technical datasheet13 sizes · construction, technical data, approvalsXLSXFPLP spec data (Excel)All 13 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What is the difference between Type FPLP and Type FPLR fire alarm cable?
Type FPLP is plenum-rated and tested to NFPA 262 (UL 910) in a horizontal Steiner Tunnel under forced airflow, certifying low smoke density (peak ≤0.50) and minimal flame travel for HVAC return-air plenums. Type FPLR is riser-rated (UL 1666) for vertical shafts between floors and cannot be installed exposed inside environmental air plenums.
Can Type FPLP cable substitute for FPLR and FPL cables under NEC Article 760?
Yes. Under the NEC Table 760.154(A) cable substitution hierarchy, Type FPLP is the highest flame/smoke rating for power-limited fire alarm circuits and may be freely used in plenum spaces, vertical risers and general-purpose runs.
When should shielded FPLP be chosen over unshielded FPLP?
Shielded FPLP (with 100 % aluminum-Mylar foil tape and tinned copper drain wire) is recommended for addressable Signaling Line Circuits (SLC), RS-485 network trunks, and 25/70.7 Vrms voice evacuation audio lines to prevent crosstalk and EMI pickup.
How do you choose between 18 AWG, 16 AWG, 14 AWG and 12 AWG FPLP?
18 AWG and 16 AWG are standard for addressable SLC loops and short NAC runs. 14 AWG and 12 AWG provide lower loop resistance to limit voltage drop on long Notification Appliance Circuits (NAC) feeding high-candela LED/xenon strobes.

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FPLP Plenum Fire Alarm Cable

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