Products Supplied:
- JZD THHN Building Wire (UL 83, Nylon-Jacketed, for conduit-based branch circuits)
- JZD NM-B Non-Metallic Sheathed Cable (UL 719, for concealed in-wall wiring)
Specifications & Quantities (Preliminary):
- THHN (Stranded Copper): 3.5mm² (12 AWG) — 2000m; 5.5mm² (10 AWG) — 1000m; 8.0mm² (8 AWG) — 3000 m; 14mm² (6 AWG) — 2000 m; 22mm² (4 AWG) — 1000m; 35mm² (2 AWG) — 1000m
- NM-B Cable: 12/2, 12/3, 10/2, 10/3 — 5000m each
Client: Manila-based cleanroom contractor / EPC firm]
Project Name: GMP Pharmaceutical Cleanroom Manufacturing Facility, Manila, Philippines
Project Commencement Date:2025
Project Details & Narrative:
Industry Context — Pharmaceutical Cleanrooms in the Philippines
The Philippines is rapidly emerging as a pharmaceutical manufacturing hub in Southeast Asia, driven by government initiatives to strengthen domestic drug production and attract foreign investment. Metro Manila, in particular, has seen a surge in GMP-compliant pharmaceutical facilities — including sterile injectables, oral solid dosage, and biologics production lines.
Pharmaceutical cleanrooms operate under the strictest environmental controls in any industry. GMP regulations mandate:
- ISO Class 5–8 cleanroom environments maintained 24/7
- Precise temperature (±1°C) and humidity (±5% RH) control
- Positive or negative pressure cascades between zones
- Continuous particulate monitoring with validated HVAC systems
- Comprehensive documentation trail for every installed component
Cable selection in this context is not trivial. Every material inside a pharmaceutical facility — including electrical cables — must meet stringent safety, cleanliness, and reliability standards. A single cable failure can trigger a batch rejection worth millions.
The Project
In 2024, a Manila-based cleanroom contractor was awarded the turnkey electrical package for a new pharmaceutical manufacturing facility in Metro Manila. The facility was designed to produce sterile injectables, requiring multiple ISO-classified cleanroom zones interconnected by pressurized gowning corridors and material airlocks.
The electrical scope covered:
- Cleanroom lighting and utility power circuits (THHN in EMT conduit, exposed in interstitial spaces)
- Office and administration wing wiring (NM-B for concealed in-wall runs, standard Philippine construction practice)
- HVAC equipment feeds — AHU and fan coil unit circuits (THHN, larger AWG, conduit-routed)
- Nurse call, intercom, and access control low-voltage backbones (NM-B multi-conductor)
- Gowning room and airlock power outlets (THHN in surface-mounted raceway)
Why THHN + NM-B?
This project called for two distinct wiring methods, reflecting the dual nature of a modern pharmaceutical facility:
THHN (Thermoplastic High Heat-resistant Nylon-coated) — for all conduit-based installations:
- Nylon jacket: Provides mechanical protection during conduit pulls — essential in cleanroom construction where conduit runs are long and complex
- 90°C dry / 75°C wet rating: Handles the heat load from densely packed conduit banks in interstitial spaces above cleanroom ceilings
- Gasoline & oil resistance: Critical for mechanical rooms housing standby generators and HVAC compressors
- UL 83 listed: Full compliance with Philippine Electrical Code requirements, which reference NEC standards
NM-B (Non-Metallic Sheathed Cable) — for concealed in-wall wiring in office and support areas:
- UL 719 listed: Recognized by Philippine construction practice for concealed residential and light commercial applications
- PVC outer jacket + paper separator: Provides insulation redundancy in concealed spaces
- 90°C rated conductors: Consistent thermal performance with THHN circuits
- Cost-effective: For office/admin areas where conduit is not mandated, NM-B offers significant material and labor savings
The Contractor’s Challenge
The cleanroom contractor faced a procurement dilemma: source THHN from one supplier and NM-B from another, each with separate logistics, minimum order quantities, and documentation streams — or find a single manufacturer who could supply both under one quality management system.
They chose the latter approach — and issued an RFQ to JZD Cable.
The Qualification Process
As a specialty cleanroom contractor with a portfolio of FDA-audited facilities, the client maintained an exceptionally rigorous supplier qualification process:
1.UL Documentation Verification: JZD submitted UL 83 file numbers (THHN), UL 719 file numbers (NM-B), UL follow-up service reports, and labeling samples — all cross-referenced by the contractor’s QA/QC team
2.Sample Procurement & Independent Testing: The contractor purchased random samples and sent them to a Philippine-accredited testing laboratory for:
- THHN: Conductor resistance (ASTM B3), insulation thickness, dielectric withstand, nylon jacket abrasion, heat resistance, cold bend
- NM-B: Jacket integrity, conductor insulation thickness, dielectric withstand, flame propagation (UL 1581 VW-1 equivalent)
JZD’s THHN and NM-B samples passed all tests with results ranking among the top tier.
3.Factory Quality Audit: The contractor conducted remote audit of JZD’s Shenzhen production facility, verifying:
- Raw copper procurement (99.95%+ purity certification)
- THHN nylon extrusion process consistency
- NM-B assembly line quality controls
- Batch traceability from raw material to finished reel
- ISO 9001 quality management system compliance
Color Coding Verification: The facility required specific color codes: black/red/blue for 3-phase circuits, white for neutral, green for ground, plus custom colors for emergency and life-safety circuits. JZD confirmed capability for all required colors on both THHN and NM-B.
How JZD Cable Won
After 3 months of qualification, JZD was selected over competitors based on:
- Dual Product Capability: JZD was the only supplier who could provide both UL-certified THHN and NM-B from a single factory — eliminating the need for the contractor to manage two supplier relationships, two sets of shipping documents, and two quality audits
- Superior Lab Test Results: JZD’s THHN samples demonstrated insulation thickness uniformity exceeding UL minimums by a comfortable margin — an indicator of production consistency that the contractor valued highly for a GMP-regulated project
- GMP Documentation Readiness: JZD provided full material traceability documentation — mill test reports, batch certificates, UL compliance certificates — in the format the contractor needed for their own GMP validation submission
- Competitive Landed Cost: FOB Shenzhen pricing on THHN combined with volume NM-B pricing, plus consolidated container shipping to Manila, delivered total landed cost savings of approximately [待确认 — %] vs. multi-supplier sourcing
- Responsive Technical Support: JZD’s engineering team answered detailed technical queries about nylon jacket formulation, NM-B jacketing compound, and flame-retardant properties within 24 hours — a responsiveness that impressed the contractor’s project manager
Delivery & Quality Assurance
Cables were manufactured in 8 weeks, with each shipment including:
- UL Certificate of Compliance with traceable file numbers
- Mill test reports for copper conductor (99.95%+ purity)
- Factory test data (conductor resistance, insulation resistance, hi-pot test results)
- Reel-by-reel packing list with serial number traceability
- NM-B cut-length labeling with sequential production coding
Shipments were consolidated into 2 × 40GP containers, shipped from Shenzhen to Manila Port, and cleared through customs within 30 days
Installation & Outcome
Post-installation feedback from the contractor:
- THHN pulled smoothly through EMT conduit with zero nylon jacket damage — the nylon coating’s lubricity reduced installation time by an estimated 15%
- NM-B cable installed efficiently in office/admin wall cavities — the sequential foot markings sped up cut-to-length work
- All circuits passed Philippine Electrical Code inspection on first attempt
- The cleanroom achieved its target ISO classification with all electrical systems fully validated
- Zero cable-related defects reported during commissioning or initial production runs
The cleanroom contractor has since listed JZD Cable as a preferred electrical cable supplier and initiated discussions for cable supply on two upcoming pharmaceutical projects in the Philippines.
JZD Cable Cleanroom Cable Solutions:
| Cable | Cleanroom Application | Key Specification | Certification |
|---|---|---|---|
| THHN | Cleanroom branch circuits (conduit), mechanical room feeders, airlock/gowning room power | Nylon jacket, 90°C dry rating, gasoline & oil resistant | UL 83 |
| NM-B | Concealed in-wall wiring for office/admin wings, low-voltage backbones, support areas | PVC jacket, 90°C conductors, paper separator | UL 719 |
About JZD Cable
JZD Cable 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.
Start Your Project
Need certified cables for your next construction or industrial project? Contact JZD Cable for a customized quotation, free sample evaluation, or technical consultation.
