Technical Comparison
PVC vs Galvanized Steel Conduit — Selection Guide
PVC vs galvanized steel conduit: mechanical protection, corrosion resistance, cost, weight, and fire rating comparison for electrical installations.
Overview
PVC and galvanized steel are the two most common conduit materials for electrical installations. PVC offers corrosion immunity and lower cost. Steel offers mechanical strength and fire resistance. This comparison covers all relevant selection factors.
Quick Comparison
| Property | PVC Conduit | Galvanized Steel Conduit |
|---|---|---|
| Mechanical Strength | Low (crushable) | High (impact resistant) |
| Corrosion | Excellent | Good (zinc coating) |
| Weight | Light (1.4 g/cm3) | Heavy (7.8 g/cm3) |
| Fire Rating | Self-extinguishing PVC | Non-combustible |
| Cost | $ (1x) | $$$ (3-5x) |
| Best For | Indoor, underground, corrosive | Outdoor, mechanical protection, fire zones |
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