Day: July 25, 2026

For switchboard manufacturers and electrical panel builders, selecting the right internal wiring solution directly affects electrical safety, assembly efficiency, and equipment reliability. Inside switchboards, wires connect breakers, busbars, protection devices, and control components while operating under continuous electrical loads and limited enclosure space. A suitable SIS wire for switchboard applications provides the flexibility, heat resistance, […]

If you’ve ever pulled NM-B​ (often called “Romex” — though Romex is technically Southwire’s brand name for NM-B ) off a shelf, you may have noticed something curious: some rolls are cylindrical, others are flat and ribbon-like. Same printing, same voltage, same color-coded jacket — but a completely different cross-section. Both are legitimate UL 719​ […]