Electrical First Fix vs Second Fix: Renovation Order
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Electrical First Fix vs Second Fix
The Renovation Sequence Done Right (2026)

Wiring decisions are cheap before the walls close and expensive after. Here is what happens at each fix.

Conduits and back boxes installed in chased walls during a renovation, before plastering

First fix is everything electrical that gets buried: conduits, back boxes, cable runs and the distribution board position, done before plastering, ceilings, tiling and carpentry close the walls. Second fix is everything you see: sockets, switches, light fittings and final connections at the board, done after painting, followed by testing. The expensive mistakes happen when layouts change after first fix. ClickBina's partition wall guide notes that a conduit sleeve left in a new wall costs about RM50 and saves RM500 or more later (indicative 2026, Klang Valley).

First fix and second fix in plain words

First fixSecond fix
WhenAfter hacking, before plaster, ceilings, tiles and carpentryAfter painting and carpentry are finished
What goes inConduits, back boxes, cable pulls, ceiling cable drops, board positionSockets, switches, light fittings, fan points, final board connections
What you checkEvery position against the drawing, before it is coveredEvery point works, and the installation is tested
Cost of a changeLow: move a box before the wall closesHigh: chase walls, patch plaster, repaint or re-tile

ClickBina's renovation process and timeline guide puts electrical first fix alongside plumbing rough-in early in the job, and second fix after the carpentry, with painting and fittings after that. The order matters because each trade covers up the work before it.

What must be decided before first fix

First fix fixes positions. Anything not decided by then becomes a change later. Before the electrician starts, have these settled on a drawing:

  • Furniture and carpentry layout: where the bed, sofa, TV wall, desk, wardrobes and kitchen cabinets go.
  • Kitchen appliances: hob, hood, oven, fridge, dishwasher, microwave, water filter; each has its own supply needs.
  • Ceiling design: downlight and cove positions, fans, and access panels in the plaster ceiling.
  • Aircon: unit positions and power points, decided with the pipe routes.
  • Water heaters and any smart toilet seat.
  • Data and TV: router location, network points, TV and CCTV cable routes.
  • Outdoor points: gate, porch, garden and any future EV charger.

ClickBina's socket placement rules guide covers the distances from water and gas, which appliances need their own connection and where cables may run.

A simple way to prepare is to walk each room with the furniture plan and ask where you will charge a phone, plug in a laptop, stand a fan and switch on the lights when you walk in and when you are in bed. Mark every answer on the drawing. Count sockets generously: it costs far less to add a point at first fix than to live with extension leads for years, and far less again than chasing a finished wall once the paint is dry and the furniture is in.

What happens at first fix

  1. The electrician marks every point on the walls and ceiling from the drawing.
  2. Walls are chased, or conduits run in the ceiling space and partitions.
  3. Back boxes are fixed at the agreed heights, and conduits laid to each one.
  4. Cables are pulled through to the distribution board position.
  5. Ceiling drops are left for downlights, cove lights and fans before the ceiling boards go up.
  6. Spare conduits or sleeves are left in new partitions and behind the TV wall for later changes.

A conduit left empty is cheap insurance. The partition wall guide's example is a conduit sleeve for about RM50 during construction, against RM500 or more to chase a finished wall later.

Check before the walls and ceilings close

This is your one chance to catch mistakes cheaply. Walk the site with the drawing before plaster, ceiling boards, tiles or cabinets go in:

  • Every back box is where the drawing shows it, at the right height, and on the right side of a door.
  • Kitchen points sit where the cabinets and appliances will be, not behind a cabinet side.
  • Bathroom points respect the distances from water set out in the socket placement guide.
  • Ceiling drops line up with the ceiling design.
  • Make a marked-up drawing, or a video walk-through with a tape measure in view, of where conduits run. Keep it with the house documents.

What happens between the two fixes

Between first and second fix, the other trades do their work: plastering and skim coat, plaster ceilings, tiling, carpentry and painting. Each one can damage or bury electrical work, so protect back boxes, keep cable ends labelled and out of the way, and make sure carpenters know where the points are before they cut openings. ClickBina's concealed aircon piping guide makes the same point for aircon: if the aircon contractor only arrives after the painters, it is too late to conceal anything without hacking.

What happens at second fix

  • Sockets, switches and faceplates are fitted once paint is dry.
  • Downlights, cove strips, pendants, fans and wall lights are installed.
  • Appliances with fixed connections, such as a hob, hood or water heater, are connected.
  • Circuits are terminated at the distribution board and labelled.
  • The installation is tested before it is handed over, including the RCCB trip test.

Ask for the board to be labelled clearly, circuit by circuit. It saves time every time a breaker trips.

Common mistakes

MistakeWhat it causesHow to avoid it
Layout changed after first fixChasing finished walls, patching and repaintingFreeze the furniture and kitchen layout before first fix
Cabinet drawings arrive lateSockets hidden behind cabinet sidesGet the carpenter's drawing before the electrician starts
No ceiling dropsSurface wiring or cutting the new ceilingMark every light and fan on the ceiling plan
Too few socketsExtension leads everywherePlan sockets for every desk, bedside and TV wall
No record of cable routesDrilling into cables laterKeep a marked-up drawing or video

What the electrical items usually cost

These are ClickBina's published ranges (indicative 2026, Klang Valley). The number of points and the length of the runs decide the total.

ItemIndicative priceSource guide
New wiring point or lighting circuitRM120 – RM250 per pointLighting design guide
Recessed LED downlight, supply and installRM60 – RM150 per pointLighting design guide
Dimmer switchRM80 – RM200 per switchLighting design guide
Rewire a kitchen with dedicated circuitsRM2,000 – RM5,000House rewiring cost guide
Install or upgrade the distribution boardRM1,500 – RM3,500House rewiring cost guide

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Older houses may need more than new points. ClickBina's house rewiring cost guide explains when a full rewire makes sense.

How ClickBina can help

WhatsApp us your job details for a quote: the rooms being renovated, the kitchen layout, and how many points you think you need. ClickBina is an experienced KL & Selangor contractor for whole-house refurbishment and trade coordination, which includes getting the trades in the right order. We reply within the hour, and the price we agree is a flat price with no hidden charges. A site visit is RM150, waived if you go ahead.

Sources & methodology

  • ClickBina renovation process and timeline guide — where first and second fix sit in the renovation order.
  • ClickBina socket placement rules and concealed aircon piping guides — positions, cable routes and timing.
  • ClickBina lighting design, house rewiring and partition wall cost guides — prices for points, boards and conduit sleeves.

How we estimated prices: every RM figure on this page is quoted unchanged from the ClickBina guides named above; they are indicative Klang Valley ranges for 2026.

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Common Questions

What is electrical first fix?
The buried part of the wiring: conduits, back boxes, cable pulls, ceiling drops and the board position, done before plaster, ceilings, tiles and carpentry.
What is electrical second fix?
The visible part: sockets, switches, light fittings and final board connections, done after painting, followed by testing.
When should the kitchen layout be fixed?
Before first fix, so every appliance point is placed where the cabinets and appliances will be.
Why leave spare conduits?
ClickBina's partition wall guide notes that a conduit sleeve costs about RM50 during construction and saves RM500 or more later.
What should I check before the walls close?
Every back box and ceiling drop against the drawing, heights, kitchen and bathroom positions, and a record of cable routes.
How much does a new wiring point cost?
ClickBina's lighting design guide lists a new wiring point or lighting circuit at RM120–RM250 per point (indicative 2026, Klang Valley).
What tests happen at second fix?
The installation is tested before handover, including the RCCB trip test, and the board is labelled.

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