Planning a fit-out or a re-light? Call 029 2068 9339
Service 02 / 06 Electrical & data installations
Lighting and power designed around how a building is actually used, installed by our own engineers. Commercial fit-outs, warehouse re-lights and Cat 5e / Cat 6 data cabling on one side; rewires, consumer units, sockets and lighting at home on the other. Same firm, same engineers, same certificates.
Working to
01 Scope
Design, installation, testing and handover — lighting, power, containment, data and controls. Two halves of the same business, given the same weight here because they get the same engineers, the same standards and the same paperwork.
Offices · Industrial · Education · Retail
01
Lighting designed around how a space is used, not copied out of a catalogue. Energy-efficient commercial schemes, warehouse and office re-lights, and the light levels the work actually needs.
Lighting design · BS EN 12464-1
02
Design, installation, testing and maintenance of power systems for safe, reliable distribution throughout the premises — incoming supply, boards, submains, three-phase machine supplies and small power.
BS 7671 · Tested and certified
03
New builds, commercial fit-outs and refurbishment projects: containment, distribution, first fix and second fix. We work to the programme and hand over a space that is ready to be used, not one still waiting on a spark.
First & second fix · Containment
04
Cat 5e and Cat 6 structured cabling, run and terminated to each outlet and labelled so a link can be traced later. Wi-Fi surveyed for coverage first, so the access points go where the building needs them.
Cat 5e / Cat 6 structured cabling
05
Lighting controls, energy-saving schemes and efficiency assessments, plus automated lighting, climate control and integrated systems — set up so the people who work there can actually operate them.
Energy management · Automation
06
Safe temporary power for events and short-term sites: distribution, cabling, protection and the testing to go with it. Installed, checked while it is in use, and taken away cleanly afterwards.
Temporary installations · Tested on site
Owners · Landlords · Renovations
01
Old wiring taken out and replaced, room by room or all at once, with the disruption planned rather than discovered. Certified when it is finished, so you have the paperwork for the file.
BS 7671 · Certified on completion
02
Replacing an old fuse board with a modern consumer unit — the protection an old installation was never given. We test the circuits first and tell you what we find before we change anything.
RCD protection · Circuits tested first
03
More sockets where you actually need them, additional circuits for a home office, an oven or a garage, and the existing installation checked to make sure it will carry them.
Additions & alterations
04
Lighting designed in layers — general light, task light and something on a dimmer for the evening — so a room works at seven in the morning and at nine at night. Fittings that look right as well as work.
Lighting design · Domestic
05
The electrical package for an extension, a loft or a whole-house renovation: first fix while the walls are open, second fix once the plastering is done, and the supply checked for the extra load.
First & second fix · Load checked
06
Lights out, a breaker that keeps tripping, a circuit nobody can explain. We find it, fix it and tell you what caused it. Fault call-outs are chargeable and we give you the rate before we come out.
Chargeable call-out · Rate agreed first
02 Who it's for
Fit-outs, offices, industrial units and schools, and people's houses — the same directly employed engineers do both.
01
Priced off drawings, worked to your programme, with RAMS issued before we set foot on site. We turn up when the sequence says we should.
02
Office electrical fit-outs across South Wales: small power and floor boxes, lighting and controls, data to every desk, phased if the floor has to stay occupied.
03
Three-phase distribution, machine supplies, high-bay re-lights that pay for themselves in running costs, and containment that will take the next change without a rewire.
04
Schools and colleges worked around term dates and shop and venue fit-outs where the lighting is half the product.
05
Rewires, consumer unit upgrades, extra sockets and lighting, and the electrical package for an extension or a renovation. Quoted before we start, certified when we finish.
06
Rewires and consumer unit upgrades between tenancies, and remedial work put right so a property is fit to let. Certificates filed to the address rather than the invoice.
As standard
Risk assessments and method statements are produced as standard on commercial work, and issued to you before the first visit.
As standard
Our engineers are DBS checked, which matters when the work is in someone's home, a school or an occupied building.
In-house
Our own directly employed engineers do the electrical work. Non-electrical trades such as scaffold or roofing may be brought in where a job needs them.
At handover
You get the electrical certification and the O&M information for what we installed — filed against the property, not the invoice.
All four are normal for us
01
The electrical package on somebody else's project. We price off your drawings, fit into your programme and your site rules, and deal with the other trades rather than sending everything back through you.
Main contractors · Fit-out firms
02
Straight to the end client, commercial or domestic, with no layer in between. One quote, one contact, and the person who priced it is the person you ring when you want to change something.
End clients · Homeowners
03
We take it from design through to commissioning: work out what the building needs, design the installation, install it, test it and hand it over. Useful when there is no consultant and nobody wants to appoint one.
Design · Install · Commission
04
Where an M&E consultant has already specified the job, we build to their specification and drawings, and raise the queries early rather than at handover.
M&E specification · Drawings
03 How it works
Five stages, and the first one costs you nothing. You see the design and the price before anybody lifts a ceiling tile, and you get the paperwork when we leave.
01
We come out, look at the building and talk through what you want it to do. Then you get a written quote setting out what is included and what is not. Both are free for work we are quoting, commercial or domestic. If you already have drawings, send them over and we will price off those.
02
Lighting designed to the task — the right light levels in the right places, without glare on a screen or a dark aisle in the middle of a warehouse. Loads calculated, board schedules drawn up, containment and cable routes agreed with the other trades before anyone starts.
03
Containment, tray and trunking in, cables pulled, back boxes set. The data cabling and the Wi-Fi cabling go in at the same time as the power, while the ceiling and the walls are still open. In a house it is the same idea before the plasterer arrives. Doing it once is cheaper and tidier than doing it three times.
04
Accessories, fittings, boards and outlets on. Then the installation is inspected and tested to BS 7671, and the controls and the automation are commissioned and set up the way you will actually use them — not left on the factory default for somebody else to work out.
05
You get the Electrical Installation Certificate for the work and the O&M information for what we fitted, plus a walk round to show whoever runs the building — or whoever lives in the house — where everything is. After that, if you want it, the same installation goes onto a maintenance programme with us.
If you want a price for a job
Commercial or domestic, if we are quoting work we come out, look at it and price it at no charge. You get a written quote that says what is included, and you are under no obligation to accept it.
If something has already gone wrong
Finding and fixing a fault is a different job from quoting one, and we charge for it. Call 029 2068 9339 and we will tell you the rate before we come out. Out-of-hours and 24-hour callouts are available at our discretion — we would rather say that honestly than promise a response we cannot always keep.
04 Power + data
On most jobs the power, the data and the Wi-Fi arrive as three separate trades, three separate prices and three separate weeks. We do all of it, so it goes in once, on one first fix, under one point of contact.
01
Tray, trunking and basket sized for the power and the data together, with the right separation between them, and room left for whatever gets added in three years' time.
Segregation · Room to grow
02
Power, data and access-point cabling pulled while the ceiling is open and the walls are still studs. One set of access, one set of making good, one lot of disruption to whoever is using the building.
Single first fix
03
We survey for coverage before we decide where access points go, rather than fitting them where the ceiling grid happens to be convenient and hoping the far end of the floor gets a signal.
Coverage survey
04
Circuits inspected, tested and certified, the data outlets labelled so a link can be traced later, and a board schedule left on the door. The next person to open it knows what they are looking at.
Certification · Labelling · Schedules
Once it is in, we can keep it running. Maintenance-contract clients also get the CJS client portal, where certificates and next test dates for the installed systems live — that side of things is covered properly on the maintenance page. Maintenance & compliance
05 Plain English
Quotes for this kind of work are full of terms that mean something precise to us and nothing at all to most people. Here is what they actually mean, so you can read a quote — ours or anybody else's — and know what you are buying.
Structured cabling means the data cabling in a building is laid out to a plan instead of grown one cable at a time. Each outlet gets its own cable, run back to one central point, and everything is labelled so a link can be traced in seconds rather than by pulling ceiling tiles. We install Cat 5e and Cat 6 structured cabling.
The point is not tidiness for its own sake. It is that in five years, when somebody moves a desk or adds a printer, the change is a short job rather than a contractor and a fortnight.
Structured cabling is
A planned system: one Cat 5e or Cat 6 cable per outlet, run back to a central point, labelled, and set out so the building can be changed later without starting again.
Structured cabling is not
A run of cable to wherever the router happens to be, extended each time somebody needs another point. That is how buildings end up with no idea what plugs into what.
These are the terms that come up on almost every commercial electrical quote.
Designing a lighting scheme means working out how much light has to land where people actually work, then choosing fittings that deliver it without glare, without dark patches, and without costing a fortune to run. In a warehouse that is about aisle uniformity and mounting height. In an office it is about screens and glare. At home it is usually about layers — general light, task light and something on a dimmer for the evening.
Get it right and the electricity bill falls at the same time as the space becomes easier to work in. That is normally where an energy-efficient re-light pays for itself.
These are the makes you are most likely to see on one of our jobs. We are not tied to any of them: we fit what suits the building, or what your specification calls for.
New installations and alterations are certified. You receive an Electrical Installation Certificate for a new installation or a substantial alteration, or a Minor Works Certificate for something smaller, plus the O&M information for what we fitted. Keep them: they are what an insurer, a landlord, a solicitor or the next contractor will ask for. Ongoing testing after that is maintenance and compliance work.
06 Why CJS
An installation outlasts the people who ordered it. It is worth knowing who wired it, and what stands behind the certificate on the board.
Accreditation
Our work is assessed against BS 7671, the UK wiring regulations, by the leading certification body for the electrical contracting industry.
Sign-off
Inspection and testing is signed off by a Qualified Supervisor. Your certificates carry a named, accountable signature.
Insurance
Cover of £10m public liability and £10m employer's liability. Certificates are available on request.
Track record
Over 38 years installing across Wales — commercial, industrial, education, social housing and domestic, from a single socket to a full fit-out.
Labour
Our own directly employed engineers do the electrical work. The same faces come back for the snags and the next phase, and they already know the building.
Account
One person who knows your job, your drawings and your programme. No call centre, no ticket number, no repeating yourself.
07 Questions
Yes. New builds, fit-outs and refurbishments are a large part of what we do: containment, distribution, first fix, second fix, testing, commissioning and handover. We work three ways and all of them are normal for us: as a subcontractor taking the electrical package on somebody else's project, direct with the end client, or design and build, where we take it from the design right through to commissioning. Where an M&E consultant has already specified the job, we build to their specification. We price off drawings if you have them and off a site visit if you do not, and issue RAMS before we start on site.
Yes, and we would rather do both at once. Cat 5e and Cat 6 structured cabling and Wi-Fi systems are part of the same job for us, so the data goes in on the same first fix as the power, while the ceilings and walls are still open. That means one set of access, one lot of making good and one point of contact, instead of three trades turning up in three different weeks. We survey Wi-Fi coverage before deciding where access points go rather than fitting them where the ceiling grid happens to suit.
Structured cabling means the data cabling is laid out to a plan rather than grown one cable at a time: each outlet has its own cable, run back to one central point and labelled so a link can be traced later. We install Cat 5e and Cat 6. Cat 5e still does the job on plenty of installations; Cat 6 is the usual choice on a new fit-out and normally what we would put in. We will tell you which one your building actually needs when we quote, rather than selling you the dearer one by default.
We design it. Lighting is designed around how the space is used: the light levels needed on the work, uniformity along a warehouse aisle, glare on office screens, and the running cost of the scheme over its life. At home it is usually about layers — general light, task light and something on a dimmer for the evening. The makes you are most likely to see on our jobs are Thorlux, Designplan Lighting, Ansell and Robus, but we are not tied to any manufacturer and specify to suit the building or your specification.
Yes, and on occupied buildings it is usually the sensible answer. Offices get phased floor by floor, shops and venues get evening and early-morning working, schools get half-terms and holidays. It is planned into the programme and priced up front at the quote stage rather than improvised on the day, so tell us at the site visit if the building cannot be shut.
Yes — and it is genuinely half of what we do, not a sideline. Full and partial rewires, consumer unit upgrades, extra sockets and circuits, lighting, and the electrical package for an extension or a renovation, all done by the same engineers who do the commercial work. If we are quoting a job, the visit and the written quote are free, at home as well as on a commercial site. Fault call-outs are different: finding and fixing a fault is chargeable, and we will tell you the rate before we come out. Out-of-hours and 24-hour callouts are available at our discretion — call the office and we will do our best.
Yes. Independent third-party inspection and testing of other contractors' installations is a service in its own right, alongside consulting on electrical projects and compliance. If you want a second opinion on a specification, a quote or a finished job before you sign it off, send us the details and we will look at it and tell you what we found.
New work and alterations are certified: an Electrical Installation Certificate for a new installation or a substantial alteration, or a Minor Works Certificate for something smaller, signed off by a Qualified Supervisor. With it you get the board schedule and the O&M information for what we fitted, filed against the property rather than the invoice. If the installation then goes onto a maintenance contract with us, all of that lives in the CJS client portal along with the next test dates.
08 Free quote
Tell us about the building and what you want it to do — we reply within one working day. The site visit and the written quote cost you nothing, whether it is a full fit-out or a socket in the back bedroom.
We have your details and will reply within one working day to arrange the visit. If it is urgent, call the office on 029 2068 9339.