Construction

In construction projects across the Philippines and Southeast Asia, few engineering decisions affect electrical safety, efficiency, and service life as much as conductor selection. In the Philippines, building wire selection is governed by the Philippine Electrical Code (PEC)—based on NFPA 70 and adopted by the IIEE and BEE. The PEC sets mandatory rules for conductor […]

Price alone won’t tell you if a power cable passes inspection, lasts, or keeps total costs down. Ampacity, voltage drop, and short-circuit rating are often overlooked—leading to failures. This guide covers cable types and selection by voltage class, construction, and key parameters. Start with Voltage Class: Low, Medium, High The first step in cable selection […]

THW and THWN belong to the same UL 83 family of thermoplastic-insulated wires. Both are rated 600V. Both carry a 75°C conductor temperature rating. The only difference in their designation is a single letter—”N” for nylon jackets. That one letter changes three things in real-world engineering: how the wire pulls through conduit, how long it […]

If you’ve had THHN wire rejected for the wrong certification mark, received cable that doesn’t match the drawings, or struggled with wire too stiff to pull through conduit, you already know the surface similarities can be misleading. Philippine standard THHN and American standard THHN look alike—copper, PVC, nylon jacket, 600V, 90°C—but they’re not the same. […]

If you’ve ever had someone hand you a roll of Royal Cord and a regular cable with the words “either works,” you already know the surface similarities can be misleading. Copper conductors, PVC insulation, and a jacket—maybe the same voltage rating—but in practice, they behave very differently. One is built to move. The other is […]

In North American armored cable procurement and engineering applications, the most common source of confusion isn’t technical specifications—it’s the naming itself. BX, AC Cable, and AC90 are often used interchangeably, but they are not on the same level. If you’re sourcing CSA-certified armored cable for Canadian or North American projects, understanding the essential differences between […]

In commercial construction, cable selection mistakes often don’t surface until inspection—and by then, the cost of tear-out and rework far exceeds the cable’s price difference. MC cable is one of the most widely used wiring methods in commercial construction. Per NEC Article 330, it is permitted in ceiling spaces, exposed runs, wet locations, and more. […]

“This doesn’t meet code. It all needs to be ripped out and redone.” No contractor wants to hear those words. Yet it happens regularly. The cable looks fine. The numbers seem right. But the electrical inspection fails. The usual culprits: NM-B cable without UL certification, 14 AWG wire on a 20A breaker, or non-UL-listed cable […]