CAT, Genny and how detection works

A cable avoidance tool, often called a CAT, is designed to detect underground cables by sensing electromagnetic signals. Used in conjunction with a signal generator, or Genny, it can also trace metallic pipes and services that are not live. Power Mode detects fields around live electricity cables. Radio Mode finds re‑radiated radio signals on buried utilities. Genny Mode pushes a genny signal onto the target so non‑energised lines can be detected and followed with accuracy.

We stock a practical range, including user‑friendly models designed for quick setup and clear read on the display. Some products include data logging and GPS, so you can document utility location and depth for your records. Noise filters and helpful prompts support good technique, making it easier to find buried cables, telecom lines, water pipes and gas pipes, then confirm the line location before you dig. Ask us to help you select the right product and accessories for the results you need.

Safety, compliance and efficiency on site

Using a cable avoidance tool is central to ensuring safety during excavation. Striking underground cables or pipes risks electrocution, gas leaks and serious accidents. A planned process that combines passive sweeps and active tracing improves coverage, making hidden services more likely to be detected and reducing risk to workers and the public. It also supports compliance with UK excavation guidance and utility‑strike reporting expectations.

Accidental damage causes delays and claims. CAT and Genny tools help you find buried utilities early, reducing unplanned outages and keeping work on schedule. Understanding the limitations of each mode, taking multiple passes, and marking the line location all raise confidence in the information gathered. You get quicker decisions on safe digging positions, fewer interruptions, and better protection for nearby structures and services.

Hire options, delivery and what’s included

Hire the right cable avoidance setup for your task. We carry stock of CAT units, signal generators and accessories such as clamps and sondes, all designed to make tracing clearer by strengthening applied signals. Tell us your site location, the type of work, and how long you need the tools, and we will help you select the best combination. Equipment is maintained for reliable performance, and we provide practical guidance on safe use and accuracy checks.

Collect from our Farncombe hire centre or ask us to deliver across Surrey. Request an itemised hire quote, and if you need pricing shown inc vat, just say. We can also provide quotes showing VAT separately. If you are unsure which kit to choose, we will help you sort it, making setup straightforward and reducing the chance of damage during excavation.

Hire a cable detection tool in Surrey

Ready to book? Request your CAT, Genny and accessories today. Jackson & Gocher will select, prepare and deliver across Surrey so you can find utilities fast and dig with confidence.

FAQs

What are a CAT and a Genny?

A CAT is a cable avoidance tool used to detect underground cables by sensing electromagnetic fields. A Genny is a signal generator used alongside the CAT to apply a traceable signal so you can follow metallic pipes and non‑energised lines accurately.

Do CAT scanners pick up dead cables?

Passive modes detect live or re‑radiated signals. To trace non‑energised conductors, use a CAT with a Genny so the applied signal can be followed along the line. This approach also helps when mapping metallic pipes and telecoms lines.

How much does a CAT and Genny cost to hire?

Hire cost depends on the model, hire period, and any accessories such as clamps or sondes, plus delivery if required. Ask for an itemised quote and tell us if you want prices shown inc vat or with VAT listed separately.

Where can I hire a cable CAT scanner?

Hire from Jackson & Gocher’s Farncombe, Godalming hire centre with delivery available across Surrey. We will help you choose the right setup and prepare the kit so you can get to site and start work quickly.

What accessories can I hire with a CAT and Genny?

Common accessories include signal clamps for cleaner coupling onto a target line and sondes for tracing non‑energised routes. We can advise which accessories will improve the signal and make tracing clearer on your site.

Do cable detectors work for detecting wires in walls?

Our cable avoidance tools are designed for locating underground utilities. If you need in‑wall detection, let us know and we will advise on suitable options from our wider range.