Approved test houses calibrate, certify, install and maintain metering installations in accordance with the Code.
Metering equipment providers and the party responsible for ensuring a metering installation is provided, for instance a retailer, grid owner or a local or embedded network owner, must ensure every metering installation used to record the supply of electricity complies with the requirements in the Code.
We approve parties as test houses for periods not exceeding 12 months.
Approved test houses are responsible for:
- installing, testing and certifying metering installations
- ensuring that the standards of metering calibration, testing, installation and maintenance detailed in the Code are carried out accurately.
There are two types of approved test houses: class A and class B.
Class A test houses
Class A test houses are approved to carry out:
- calibration of working standards, metering equipment and metering installations
- installation of metering equipment
- commissioning and certifying all categories of metering installations.
In addition, a class A test house is authorised to issue calibration and certification reports for all metering categories.
Class B test houses
Class B test houses are approved to carry out:
- calibration of class 1 and class 2 meters and class 0.5 current transformers
- the installation of metering equipment
- commissioning and certifying category 1-3 metering installations.