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Cable Support Spacing & Vibration Isolation Calculator

Calculate maximum cable support spacing based on cable weight and allowable sag, and determine vibration isolation requirements for industrial environments. Aligned with IEC 61914, NEMA VE1, and IEC 61386 standards.

📐 Cable & Environment Inputs
From cable datasheet; includes insulation and sheath
📐

Enter parameters and click Calculate to see results

Input Summary
Cable OD—
Weight/m—
Vibration—
Clamp—
Spacing Formula
  • Span = √(8 × EI × δ / (w × L)) — simplified beam model
  • For horizontal: max sag = wL²/(8EI)
  • Vibration reduction factor applied for environment
  • IEC 61914 / NEMA VE1 spacing tables used as baseline
Standards
  • IEC 61914: Cable cleats for electrical installations
  • IEC 61386: Conduit systems
  • NEMA VE1: Cable tray systems
  • IEC 60068-2-6: Vibration testing
  • ISO 10816: Mechanical vibration evaluation
Important
  • Results are engineering estimates — verify with structural engineer for critical installations
  • Short-circuit forces may require additional cleats — consult IEC 61914
  • Seismic zones require special bracing per local codes

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