Marking and Labelling – ConnectUs Electrical Contractors

Marking and Labelling

Marking and labelling is an important requirement of BS7671. It ensures the maintenance of an electrical installation can be carried out safely and effectively by any competent person.

Each distribution board should have an up to date circuit chart or diagram which indicates the following information; – size and type of protective devices, wiring types and size of conductors and cpc’s, and a description of the connected load. The circuit chart or diagram should also note any circuits vulnerable to an insulation test.

Notices or labels are also required at the following points and equipment within the installation:

Where an unexpected presence of nominal voltage exceeding 230 V is present
Where a nominal voltage exceeding 230 V is present between simultaneous accessible equipment
Where there is a presence of different nominal voltages in the same equipment
Where a bonding or earthing conductor is connected to equipment
To identify switchgear or control gear unless there is no possibility of confusion
To identify protective devices
To identify isolators and the circuits which they isolate
Where isolation requires more than one device
At the origin of the installation a notice showing the next inspection date
At the origin of the installation a notice for RCD quarterly testing
At each distribution board a notice warning if there are two wiring colours present

What our clients say...

We asked Connectus Electrical to carry out the design and install for the new electrical supplies to our equipment for our new robotic cell manufacturing unit. We were on a very tight schedule and with the help Connectus Electrical’s team, the project was operational on time.

Ewan McConnell
,
Managing Director, Magor Designs
We have had a long standing relationship with Connectus Electrical Ltd based on excellent service and competitive pricing. Following a weekend flood that damaged our offices, reception, and meeting rooms we called out Connectus who had temporary power set up ready for Monday morning that minimised any business disruption. Connectus subsequently carried out all electrical repairs, rewiring, and data services; we were delighted with the standard of works and the way in which their team carried them out.

Richard Green
,
Operations Director, Bearmach Ltd
One of our customers in Cardiff wanted me to pass on her thanks to one of your engineers. She said that she was very impressed with the level of service she received. He sorted out the problem efficiently and took the time to explain everything to her. She described him as a ‘marvelous bloke.

Georgina Lewis
,
Westward Energy Services Ltd
One of our in house maintenance engineers was off sick for six weeks. Connectus Electrical were able to supply a maintenance electrician for the duration at short notice. We were very impressed with their service engineer.

Lee Murphy
,
Senior Team Leader, Macmillan Distribution Ltd