# Fault Finding and Repair in IP19 postcode (IP19)

This page is for IP19 postcode, IP19.

Fault finding is time on the tools, not a part. Tracing a tripping RCD takes twenty minutes or half a day, and nobody can price that over the phone without seeing the installation. The repair itself is usually the cheap end of the job.

The method is dull and it works. Unplug everything first, because a faulty appliance trips an RCD far more often than faulty wiring does. Immersion heaters, washing machines, freezers and anything used outdoors lead that list. Circuits then go back on one at a time until the fault reappears. That circuit gets half-split and tested from the middle, over and over, until the fault sits between two known points. Insulation resistance is tested at 500 V DC between line, neutral and earth.

Which device operated is the first clue. An MCB trips on overload or a short circuit. An RCD trips on earth leakage above roughly 30 mA. Different problems, different search.

Repairs to an existing circuit are certified on a Minor Electrical Installation Works Certificate. A new circuit or a board change needs an Electrical Installation Certificate.

Call +44 7463 593533 or email contact@norspark.co.uk. Price confirmed on the phone before we come out.

Standard callout is £120 + VAT, Mon-Fri 8am-6pm, first hour of labour included. After hours is £180 + VAT, first hour included. Extra time is £80/hr + VAT standard, or £100/hr + VAT after hours, in 30-minute increments. Parts and materials are charged separately, at cost. No extra charge for travel within the service area.

NAPIT registered. Electricians qualified to BS 7671. Fully licensed and insured. Free, no-obligation quotes. Emergencies run 7 days a week, daytime and after hours.

## See also

- [All services](https://norspark.co.uk/services)
- [Contact](https://norspark.co.uk/contact)
- [Emergency](https://norspark.co.uk/emergency)