Using PVC Schedule 40 pipes for electrical tower installations is viable but requires consideration of the following:

1. Strength: PVC is durable but not as strong as metal conduits, especially in exposed areas.
2. UV Protection: If exposed to sunlight, use UV-resistant coatings or bury the pipes.
3. Code Compliance: Check local codes; Schedule 80 may be required for underground use.
4. Thermal Expansion: PVC expands with heat, so account for this in the design.
5. Fittings: Use proper fittings and protect pipes in high-risk areas.