Upper fixing point to lower fixing points (centre to centre)
Hanging bracket in first position (fully retracted)
Forth position (fully extended)
Left to right lower fixing points (centre to centre)
Lower fixing point centre to lower edge of short terminal cover
Lower fixing point centre to lower edge of long terminal cover
All dimensions are in millimetres.
10.5. Using aluminium cables
The certification of meters in respect of current rating is valid only when used with copper supply
and load cables of the correct diameter. If aluminium cables are to be used, the meter current
rating will be downgraded, and the meters should be ordered with plated terminals instead of
standard brass terminals.
Meters with standard brass terminals should not be connected directly to aluminium mains cables, as this may
cause corrosion due to electrolytic action.
If a meter with brass terminals must be used in premises with aluminium cables, it is highly advisable to:
Terminate the aluminium cables in a suitable junction box close to the meter.
Complete the connections to the meter with copper cables > 0.5m in length.
Alternatively, use suitable copper cable-sheaths on the terminating ends of the aluminium cables.
This will prevent terminal corrosion, and allow the meter to be used at its certified current rating.
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