5.8.1-1
Electrical mains and sub-mains distribution
Component Information
- Code:
- 5.8.1-1
- Sequence:
- 1
- Unit:
- m2
- Sub-Element:
- 5.8.1 - 1 Electrical mains and sub-mains distribution
Electrical mains and sub-mains distribution
details to be stated.
Component Statistics
Measurement Rules
Included Items
Excluded Items
Measurement Rules (5)
The area measured is the total GIFA of the building.
Installations for residential units, hotel rooms, student accommodation units, etc. may be enumerated (nr). The type of residential unit or room, and size (by number of bedrooms) of unit, is to be stated.
Work to existing buildings is to be described and identified separately.
Where the contractor is only responsible for designing specific elements and/or components of the building project (i.e. not the entire building project), contractor-designed work is to be described and identified separately.
The percentage additions for testing and commissioning are to be applied to the total cost of the items comprising the sub-element. A single combined percentage addition can be applied to cover the costs.
Included Items (12)
Distribution of LV electricity from (and including) the building’s main switchgear panel to (and including) the area distribution boards.
HV switchgear.
LV switchgear and distribution boards.
HV and LV cables and wiring, including support components, cable trays, etc.
Conduits and cable trunking, including all fittings and support components.
Busbar trunking.
Earthing and bonding components.
Transformers.
Fuse pillars, base units, poles and accessories, etc.
Sundry items.
Testing and commissioning.
Where works are to be carried out by a subcontractor, the subcontractor’s preliminaries, design fees, risk allowance, overheads and profit, with allowance for these to be made within unit rate applied to element or component.
Excluded Items (7)
Connections to statutory undertaker’s electricity main (included in sub-element 8.7.2).
Distribution of HV electricity to on-site transformer (included in sub-element 8.7.2).
Transformer sub-stations, including packaged sub-station's main (included in sub-element 8.7.2).
Distribution of LV electricity to main switchgear panel within the building, including main switchgear panel, cables, excavating and backfilling trenches, etc. (included in sub-element 5.8.2).
Electric generation installations within the building (included in sub-element 5.8.5).
Building management systems and other control systems (included in sub-element 5.12.3).
Builder’s work in connection with services (included in element 5.14).
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