Vector's Guide To Gas

Natural gas connections

Gas meters

Gas meters are also known as Gas Measurement Systems (GMS). The GMS owner, often the retailer will install, and retain ownership of gas meters on a property.

Residential gas meters

The size of the meter depends on the maximum load of the appliances installed.

A standard gas meter has a capacity of 10m3/hr (approx. 400 MJ/hr), supplying gas at a pressure of either 2.5 kPa, or 2.75 kPa. Meters with a greater capacity are available on request.

Gas meters are covered by a powder-coated metal casing for protection. The diagram here shows a typical residential gas meter and dimensions. These dimensions will vary marginally between different GMS owners.

In-built mounting kits are available from the GMS owner. They facilitate the mounting of the standard gas meter unit and reduce the distance a gas meter protrudes from a building to 150mm (usually 250mm). These kits can be completely in-built into an outside wall, or semi-submerged/recessed, and are particularly useful where polystyrene house cladding makes mounting of a standard gas meter problematic.

More details on the types of residential gas meters can be obtained from the GMS owner. Contact an energy retailer for advice. See Energy retailers section.

Standard gas meter

In-built gas meter

Semi-submerged gas meter

Residential gas meter locations

In a residential setting the gas meter must be mounted at ground level on a wall and positioned on the front or within 3 metres, of either side of the building, and at a point where it is in a straight line from a gas main.

Gas meters cannot be positioned within certain distances of electrical equipment, including electricity meters and meter boxes, openings such as doors and windows, and flue terminals. Please refer to Ventilation and flueing for the minimum clearances that flue terminals are required to have from a gas meter.

See the diagrams for details of acceptable gas meter locations and required clearances and please check the latest NZ Standards and the retailer requirements for meter locations. A Channel Partner can also provide assistance.

Acceptable residential gas meter locations

Acceptable gas meter locations - residential gas meter with venting regulator

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Gas meters for apartment buildings

A centralised meter location is used for metering individual apartments in a complex. Gas meters for each apartment are set up in the central location, with gas pipework then being run to each individual apartment. This allows for ease of meter reading and maintenance.

Apartment building gas meter locations

All metering equipment for a building must be installed either at the boundary of a property or in a room on an external wall of the building, fully sealed from the premises, with vents to atmosphere and externally opening doors that can be accessed from the street.

Channel Partners or Vector can provide assistance with meter locations and site specific requirements.

Commercial and industrial gas meters

Commercial and industrial gas meter locations tend to vary, as different meters will be used depending on the likely gas load and the maximum and minimum flow quantities. These quantities are determined by adding the maximum capacity of all the equipment, the gas supply and metering pressure and the flow characteristics of the site, for example, peak or constant loads.

The energy retailer will determine which meter set will be required.

Commercial and industrial gas meter locations

Large gas meters for commercial and industrial applications, including schools, hospitals, rest homes and shopping malls, are usually installed close to the property boundary.

If circumstances do not allow for the metering equipment to be installed at the boundary of a property, the meter must be installed in a room on an external wall of the building, fully sealed from the premises, with vents to atmosphere and externally opening doors that can be accessed from the street.

For further information regarding meters, talk to a Channel Partner or directly with an energy retailer.

Relocating existing gas meters

Only authorised service providers are permitted to work OnGas metering equipment.

Contact the energy retailer to have a gas meter relocated and they will arrange a site visit by their contractor before providing a quote for moving the meter.

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