Electrician tool
Cable Size Guide
Understand why cable size depends on load, route and protection. This tool gives a practical planning estimate, not a substitute for safe electrical testing or a fixed quote.

Before You Use This Tool
Cable Size Guide helps London property owners plan understand why cable size depends on load, route and protection. Use it to prepare questions, photos and access details before booking; final safety decisions still depend on qualified electrical testing at the property.


How to use this tool
| Step | What to enter or prepare | Why it matters |
|---|---|---|
| Describe the Cable Size Guide issue | Note the room, circuit, appliance and time the problem started. | Helps the electrician prepare the right tester and parts. |
| Photograph the Cable Size Guide area | Share the consumer unit, fitting or damaged accessory if safe to do so. | Improves triage but does not replace testing. |
| Stop using affected Cable Size Guide fittings | Avoid warm sockets, buzzing switches, wet lights or damaged cables. | Reduces risk before the visit. |
| Confirm access for Cable Size Guide | Mention parking, tenants, concierge, stairs or trading hours. | Prevents delays and improves quote accuracy. |
What affects the result
| Factor | How it changes the estimate | Before you book |
|---|---|---|
| Urgency | Changes the price for Cable Size Guide because the electrician must plan labour, safety and documentation. | Tell Gab Electrician about this before booking. |
| Testing Time | Changes the price for Cable Size Guide because the electrician must plan labour, safety and documentation. | Tell Gab Electrician about this before booking. |
| Property Access | Changes the price for Cable Size Guide because the electrician must plan labour, safety and documentation. | Tell Gab Electrician about this before booking. |
| Materials | Changes the price for Cable Size Guide because the electrician must plan labour, safety and documentation. | Tell Gab Electrician about this before booking. |
FAQs
Is the cable size guide a fixed quote?
No. The cable size guide is a planning aid. A final quote depends on testing, access, materials and safety requirements.
Should I still call an electrician?
Yes. If the cable size guide relates to heat, burning smell, repeated tripping, exposed damage, water near electrics or uncertainty, call an electrician.
