Each custom-built control cubicle will be subjected to a factory test procedure which will be in accordance with BS 7671 and will include an insulation test, an inspection check of all wiring connections and indents in accordance with the ‘as-built’ wiring diagram and will also be subjected to a load cycle soak test.

The weather monitoring devices and the manual override switch are also tested.

On successful completion of the factory test, Part A of the GrayBar In-process Inspection sheet DR040 will be completed prior to despatch of the control cubicle to site.