Project: JZD Cable – Case Study: XHHW-2 & TC-ER Cables for Hospital HVAC & Medical Gas Systems, Philippines
Products Supplied:
- JZD XHHW-2 Power Cable (XLPE, for mechanical room & outdoor equipment feeders)
- JZD THHN Building Wire (for general branch circuits)
Specifications & Quantities (Preliminary):
- XHHW-2: 22mm² to 120mm² — 20000m — AHU/chiller/boiler feeders
- THHN: 3.5mm² to 35mm² — 20000 m — general circuits
Client: Philippine hospital construction contractor
Project Name: Hospital HVAC & Medical Gas System Upgrade, Philippines
Project Details & Narrative:
Hospital HVAC — Life-Critical Environmental Control
Hospital HVAC systems are fundamentally different from commercial building HVAC:
- Infection Control: Operating rooms require laminar airflow with HEPA filtration, positive pressure relative to adjacent spaces, precise temperature (18–24°C) and humidity (40–60% RH)
- Isolation Rooms: Negative pressure for airborne infection isolation, with alarmed pressure monitoring
- Sterile Processing: Specific temperature and humidity for instrument sterilization areas
- Medical Gas Systems: Oxygen, nitrous oxide, medical air, and vacuum systems with centralized alarm monitoring
- 24/7/365 Reliability: No downtime permitted — redundant equipment, emergency power, and fail-safe control systems
Cable selection in this environment must account for: high ambient temperatures in mechanical rooms, outdoor exposure for cooling towers and chillers, EMI shielding for sensitive alarm circuits, and fire safety for patient-occupied areas.
The Project
In 2025, the contractor undertook the HVAC and medical gas system installation/upgrade for Philippines.
The scope included:
- New chiller plant with VFD-driven centrifugal chillers
- Air handling units serving operating theaters, ICU, and general wards
- Medical gas manifold rooms with centralized alarm panels
- Building Management System with monitoring points
Why XHHW-2 for Hospital Mechanical Rooms
Hospital mechanical rooms house chillers, boilers, medical air compressors, and vacuum pumps — equipment generating significant ambient heat. Standard PVC-insulated cables (75°C wet rating) can degrade over time in these conditions. XHHW-2’s XLPE insulation provides 90°C rating in both wet and dry locations, with superior long-term thermal stability. For hospital applications where reliability is non-negotiable, this margin matters.
Supply & Installation
- JZD supplied the cable package across 1 shipments
- All cables accompanied by UL compliance documentation and factory test reports
- On-site, the electrical contractor reported clean installations with no cable defects
Outcome
The hospital’s HVAC and medical gas systems were commissioned successfully. Post-installation:
- Operating theater environmental parameters met surgical standards
- Medical gas alarm system functioned reliably — zero false alarms attributed to cabling
- BMS integration achieved all control and monitoring objectives
- XHHW-2 feeders in mechanical rooms showed no signs of thermal stress after 2 months
The contractor has since engaged JZD Cable for cables on additional hospital projects.
About JZD Cable
JZD Cable (Shenzhen JZD Wire & Cable Co., Ltd.) is a professional cable manufacturer with over 20 years of experience, headquartered in Shenzhen, China. We produce a full range of UL-certified building wires — THHN, THWN-2, XHHW-2, NM-B, TC-ER — and export to Southeast Asia, the Pacific, the Middle East, Africa, and the Americas. Our factory operates under ISO 9001 quality management, with every shipment backed by complete certification documentation and batch traceability.
Need certified cables for your next construction or industrial project? Contact JZD Cable for a customized quotation, free sample evaluation, or technical consultation.
