Product Information

Specification

250 MCM 1C Pyrotenax MI BC LSZH Jacketed SYS 1850Z 600V 2-hour Fire Rated Cable

Also Know As:

250/1C Pyrotenax Cable, 250/1C 2-hours Fire Rated Cable, 250/1C MI Bare Copper Cable, 250/1C Mineral Insulated Cable, 250/1C 2 hours sheated Fire rated cable, 250/1C Fire Rated Cable 300V, 250/1C Fire Rated Cable 600V, 250/1C LSZH Jacketed Fire Rated Cable, 250/1C Jacketed Fire Rated Cable, 250/1C SYS 1850Z Cable

Description:

• nVent PYROTENAX System 1850Z Jacketed Fire Rated Cable is a range of mineral insulated (MI) 2-hour fire-rated wiring cable for critical and essential circuit protection. It consists of solid copper conductors, in a continuous copper sheath, with a low smoke zero halogen (LSZH) jacket. Developed for transit tunnel applications, it may also be used in other areas where corrosion due to moisture may be of concern. Cable terminations are typically field installed

• When installed in accordance with nVent installation procedures, the result is a UL/ULC 2-hour fire-resistive system. This certification meets the requirements of an “Electrical Circuit Protective System” as referred to in Articles 695 and 700 of the National Electrical Code (NEC). The details of this system appear in Electrical Circuit Integrity System (FHIT and FHIT7), System No. 1850, of the UL and ULC Fire Resistance Directory.

• System 1850 cables are manufactured using only inorganic materials, copper and magnesium oxide. For more details about System 1850, please refer to nVent data sheet H57442. System 1850Z cables are manufactured using our rugged 2-hour fire-rated MI cable and is jacketed with a material that complies with wet-location and "low-smoke, zero-halogen" requirements for transit applications as outlined in NFPA 130. Although developed for transit tunnel applications, it may also be used in other areas where corrosion due to moisture may be of concern, such as rooftops, partially-buried, buried or concrete encased runs or crawlspaces. For more details about approvals and standards, please see the Approvals section

Features:

• Ultimate performance: fireproof, no smoke generation, zero halogens, high mechanical strength and corrosion resistance, waterproof and non-ageing
• UL fire-resistive classified, does not require additional conduit or fireproofing
• UL Classified/ ULC Listed: tested to the UL 2196/ULC-S139 fire test standards
• Meets requirements of an Electrical Circuit Protective System, as referred to in Articles 695 and 700 of the National Electrical Code (NEC)
• System 1850 appears in Electrical Circuit Integrity System (FHIT and FHIT7) of the UL/ULC Fire Resistance Directory
• Complies with wet-location and LSZH requirements for transit applications as outlined in NFPA 130
• Reliable during long life: 30 year product warranty available

Construction:

• Sheath: Seamless soft-drawn copper
• Insulation: Highly compressed magnesium oxide (MgO)
• Conductor type: Copper
• Insulation voltage rating: 600 V
• Conductor size: 16 AWG – 500 kcmil
• Jacket (optional): Low-smoke, zero-halogen polyolefin

Temperature Rating:

• Continuous exposure temperature: 90°C (194°F)
• Maximum exposure temperature: 1010°C (1850°F), (one time only)

Performance Rating:

• Oil & Gasoline Resistance: UL 2556; 4.2.8.3, 4.2.8.4
• Vertical Tray Flame Propagation: FT4 / IEEE 1202; UL 1685
• Smoke Release in Vertical Tray: ST1 / IEEE 1202; UL 1685
• Fire-Resistive; Circuit Integrity: Two Hours with Hose Stream; UL 2196 and ULC S-139

Bending radius:

• Cables ≤ 3/4" diameter NEC: 5 times cable diameter
• Cables ≤ 3/4" diameter CEC: 6 times cable diameter
• Cables > 3/4" diameter NEC: 10 times cable diameter
• Cables > 3/4" diameter CEC: 12 times cable diameter

Specification:

• Part No: 1/250-746Z
• Conductor Size: 250 Kcmil
• Nominal OD: 0.836 in
• Nominal coil length 3 [ft (m)]: 383 (117)
• Nominal weight: 1414 lbs/1000ft
• NPT gland size: 1-1/4 in

*Data provided on this page is subject to change based on different manufacturers' variances

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