Prefabricated Wiring System Provides 70% Time Saving in Installation
Burgin Contracting has achieved a 70 percent time saving on an electrical installation for prestigious central London offices by using Hager’s prefabricated wiring system, klik.system.
The installation at 6-7 New Bridge Street in Central London used klik.system from the distribution boards right through to final luminaires and lighting control. The prefabricated wiring system also provides power to fan coil units throughout the seven-storey building.
The system saved significant time in the first fix because there were fewer hardwired connections to make. This labour saving translated into a cost saving on the job making the tender more competitive.
It was also expected that there would be significant savings when it came to inspection and testing, since the system had been designed and manufactured in a factory controlled environment, having already been pretested, plus less fault finding before and less snagging afterwards.”
All of the sub distribution was provided, which includied11 TP&N distribution boards; three of these boards are for the landlord’s supplies and eight for tenants. The dual distribution boards are all MID metered for both lighting and power to meet Part L2, and with MID approval can be used for billing tenants if the landlord chooses to do so.
The multi-core home run cables from these boards, plug into area distribution boards (ADBs) in the ceiling void, which in turn plug into lighting marshalling boxes (LMBs). The luminaires then plug into the marshalling boxes as do the occupancy sensors that provide the lighting control.
The occupancy sensors switch the lighting on in response to motion and then switch them off after a time out period when there is no further motion. They also contain a photocell so that the luminaires switch off if natural light levels are above a set level.
Hager designed the system for Burgin using its bespoke software package to ensure that the prefabricated wiring system complies with all of the relevant standards and regulations. This produced a fully calculated design, which includes drawings, electrical calculations, test information, and delivery schedules.
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