Colchester Electrician Notes
On-site notes from a working electrician in Colchester

Job notes from a Colchester electrician

Gray Logic Electrical — NICEIC-registered, covering Colchester and North Essex. This is where I write up what I find on jobs: EICRs, fault-finding, consumer units, wiring that should have been sorted years ago.

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Latest from the jobs

Short, straight write-ups from real work around Colchester — written in between call-outs and getting the power back on.

Fault finding · Terraced house

A tripping RCD in a Colchester terrace – where the fault actually was

A "just change the breaker" call-out in a typical Colchester terrace: one 30 mA RCD covering most sockets, with outside loads tipping it over. How we tracked down the real leakage source — and why the RCD itself wasn't the villain.

~7 min readRead note

Earthing · EICR · Outbuildings · EV charging

TN-S at the service head... PME in the street? Why both can be "true" (and when it matters)

Why an intake can present TN-S while guidance still says "treat it as PME" for exported earth. Covers hybrid networks, EICR recording vs outdoor touch risk, metal outbuildings and EV charging.

~9 min readRead note

Meter boxes · EV charging · BS 7671

Why you shouldn't put customer wiring inside a meter box

Why meter boxes aren't accepted as customer wiring spaces (industry guidance), where BS 7671 becomes relevant (basic protection, terminations, enclosure use), and the clean fix: fit a separate adjacent enclosure.

~7 min readRead note

EICR · Colchester

What actually happens on an EICR in Colchester?

"We just need an EICR." Here's what I actually do on site: the walk-through, safe isolation, proper circuit testing, and how the codes get decided in older Colchester properties.

~6 min readRead note

DMX lighting · Public building

DMX stage lighting faults in a Colchester public building

Fault-finding "possessed" stage lights: intermittent DMX, lost addresses and a control desk that kept forgetting its show. Includes the control-side fixes and the BS 7671 segregation issues found in the AV wiring.

~8 min readRead note

Consumer units · EICR · Colchester

Your consumer unit looks fine — why the EICR still flagged it

A fuseboard can look tidy and still be flagged (sometimes with a C2). What the EICR codes actually mean, common board-related reasons, landlord implications, and when a replacement recommendation is genuinely justified.

~10 min readRead note

Notes from the job

This is my note-taking space as a working electrician in Colchester — a place to break down EICRs, real jobs, and the details that don't fit on a standard business website.

  • No sponsored rankings. No paid listings.
  • No stock photos of handshakes and perfect lofts.
  • Just the reality of testing, fault finding and upgrading installations in and around Colchester.

Where to book work

If you're in Colchester and need an electrician, this blog sits alongside my main site:

graylogic.uk