Wire Types Explained for Mobile, Marine, and Off-Grid Electrical Systems
June 16, 2024 · 14 min · 44K views
What this video covers
Marine and mobile electrical systems require stranded copper wire to withstand vibration and prevent fatigue-related failures.6:12 Solid-core wire, such as Romex, is prone to work hardening and breaking when subjected to the constant movement of a boat or vehicle, creating high-resistance points that pose a significant fire risk.6:32 The American Boat and Yacht Council specifically prohibits solid-core wire in marine applications.6:51 When selecting wire, insulation temperature ratings determine ampacity, with 105°C-rated wire safely carrying more current than 75°C-rated THHN wire.1:59 High strand counts are essential for flexibility, particularly in larger gauges like 4/0, which remain manageable only with high-density stranding.8:50 Tinned copper wire provides superior corrosion resistance in saltwater environments, though untinned copper remains sufficient for most land-based RV and van installations.10:44 Always verify that wire carries appropriate safety certifications, such as SAE, UL, or ISO, and ensure the voltage rating meets or exceeds the system's maximum potential.12:16
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