During the course of our recent 4th Edition of the Wiring Rules training courses the following points were raised by contractors on a number of occasions:
Verification and Certification Training
Every Registered Contractor must employ at least one Qualified Certifier. Only Qualified Certifiers are allowed to sign completion certificates. Each Qualified Certifier must attend a recognised Verification and Certification training course and/or be assessed every three years. Therefore Registered Contractors or their Qualified Certifiers must comply with this rule from now on for processing of completion certificates.
We intend to run our Verification and Certification course on a more frequent basis and any Qualified Certifier who has not been on a course in the last three years should arrange to attend one as soon as possible.
Frequently asked questions at the 4th Edition courses by RECI
- Earth loop impedance
Earth loop impedance should be taken into consideration at design stage as the values in the 4th Edition have dropped appreciably. - Heating control equipment in the airing cupboard
Heating control equipment in the airing cupboard should be RCD protected and also have a means of isolation. - Sockets in kitchens
If a socket outlet is readily accessible it is not necessary to install an extra means of isolation. - Complete rewire of dwelling
4th Edition rules applies eg distribution board height, switch and socket heights etc. - What certificate is required for relocation of meter
A Normal domestic/small commercial < 50KVA certificate should be used. Tests should be carried out on the cable used in the relocation of meter. It is designated as an alteration to the installation and the comment box should reflect that it is for relocation of meter only. - Freezers
It is recommended to put freezers on separate RCD protection or a fixed outlet not RCD protected. - Installations wired to 3rd Edition
(see note in Newsletter regarding this item.) - Plasma TV’s in Bars
These items are usually at great heights and the socket used is termed a designated socket for the item in question only. - C.E.R. request that all test meters be calibrated every 12 months.
- Instant shower
If you install an instant shower in an existing installation, the instant shower should be fully tested and a <50kVA certificate issued to owner of the dwelling in respect of the shower unit. - Agricultural Installation
Plastic non conductive non corrosive equipment are required in these installations with IP rating.