When totally enclosed by deep insulation a cable has to be derated by 50%, so 1mm T&E is not quite in on a 6A 60898 type B, but but in bungalows and dormer houses 2.5 T&E becomes derated to 13.5A which is a real problem.
We sign to say that our work meets all the Building regulations, when we notify.
The insulating companies dont sign to say their work meets all building regulations, so they are not bothered.
The plumbers and heating guys also dont sign to say their work meets any Building Regulations.
Who agreed to all this for Electricians, the Schemes, they dong give a ****.
"Hello Zeno",
With regard to your comment that Plumbers and Heating Engineers don`t have to `Sign` that their Work meets Building Regulations etc. :
PLUMBERS:
Almost ALL Works in Plumbing HAVE TO meet the relevant Building Regulations - Self Employed Plumbers either have to be Members of Approved Competent Persons Schemes for BOTH the Water Regulations [Used to be Water Bylaws] AND for the Building Regulations aspects relating to Plumbing / Drainage / Hygiene and then Record / Notify and Certify their Plumbing & Drainage [inc. obviously Waste Water] - OR Their Work HAS TO BE Notified to both the Building Control Department of the Local Authority AND the relevant Water Authority - These Organisations will then Inspect / Supervise compulsary Testing of the Works - Pressure Testing of Copper Pipework and Air Testing of Waste Water / Soil and Drainage - As well as ENSURING that ALL of the Works adhere to EVERY relevant Regulation.
The involvement of the Building Control Department and the Water Authority is Chargeable - and can Cost quite a lot of Money ! - Paid usually by the Client - BUT - NOT something that the Client would want to find out `After the Works` !
ONLY very basic `Like for Like Swaps` are exempt from these requirements - And even then ONLY If there has to be NO Upgrading of Pipework etc. to adhere to New Regulations.
HEATING ENGINEERS:
ALL Heating Engineers who Install Gas Appliances and Pipework HAVE TO be Registered with GasSafe who have taken over from CORGI as the National Gas Installer Registration Organisation.
In order to be Registered they HAVE TO be Assessed on ALL of the aspects of Gas Work that they carry out - This is a 5 Yearly process and they also HAVE TO renew their Registration on a Yearly basis.
There are also GasSafe Inspections carried out on Sample Jobs by GasSafe Inspectors to ensure that Gas Installers are carrying out their work correctly and adhering to ALL relevant Regulations.
Heating Engineers carry out Safety Inspections / Landlords Inspections on Gas Appliances and Pipework and Issue Certificates for ALL of the Gas Appliances that they Install - as well as Notifying these Gas Appliances to GasSafe on the basis that the Heating Engineer is of `An Approved Class of Person` who can Inspect and Certify Gas Installations and Appliances.
This Notification / Certification is INSTEAD OF Inspections by the Building Control Department - And can ONLY be carried out by REGISTERED GAS INSTALLERS - MANY of who are Heating Engineers.
I have deliberately commented on Self Employed Plumbers and Heating Engineers here - because obviously those working for Companies would have the Companies Notifying and Certifying the Works / Contracts.
Just a few comments to allay the impression that `Plumbers and Heating Engineers do NOT `Sign For` their Work`.
I am NOT trying to be argumentive here Zeno - just trying to show - Briefly - The Plumber & Heating Engineers Viewpoint.
Regards,
Chris - Heating - Plumbing and Gas Installer