5mm vs 7mm Push Cable — How to Choose
Push cable is the backbone of any sewer camera system. This guide explains the practical differences between 5 mm and 7 mm fiberglass cables, when to pick each, and which Powerwill models fit your work.
5mm vs 7mm at a Glance
| Spec | 5 mm Cable | 7 mm Cable |
|---|---|---|
| Typical Reach | 98–165 ft | 196–264 ft |
| Rigidity | Medium (better bend navigation) | High (stable over long runs) |
| Recommended Pipe Size | 1.25"–4" | 1.5"–10" |
| Best Use | Indoor drains, tighter bends | Main laterals, longer straighter runs |
| Powerwill Model | L09D1 / L09D2 | 10DZ / 10DX1 |
FAQs
Can a 7 mm cable go through tight P-traps?
Not recommended. Use a 5 mm cable for tighter indoor bends. For 7 mm, choose straighter entry points such as a cleanout.
What pipe sizes and bend radii can the 7 mm cable navigate?
It’s ideal for straight pipes larger than 1 inch, gentle bends above 2 inches, and near-90° elbows with diameters over 6 inches. This makes it suitable for residential and municipal mainlines, cleanouts, and long outdoor runs.a cleanout.
What advantages does the 7 mm fiberglass pushrod offer compared with 4 mm cables?
The 7 mm fiberglass pushrod provides significantly higher push strength and better directional control, allowing the camera to travel farther through longer or straighter pipes. Its reinforced fiberglass core and multi-layer protective mesh resist twisting and breakage, ensuring stable image transmission even in rough environments.
Are there any bending limitations or precautions when using the 7 mm cable?
Yes. Avoid bending the cable tighter than 90° to prevent internal fiber stress and signal damage. Always feed the cable smoothly and avoid forcing it through sharp elbows. Proper handling ensures longer service life and consistent performance.
Does cable diameter affect image quality?
No. Image quality is determined by the camera head and monitor. Cable diameter mainly affects push strength, bend navigation, and reach.
Which model should I choose for 3\"–10\" outdoor lines?
Powerwill 10DX1 with a 7 mm × 264 ft fiberglass cable is optimized for long, straighter runs and larger pipes (3\"–10\").
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