Large construction projects fail on electrical supply for one of three reasons: specification changes after procurement has started, underestimating lead times for specialist equipment, or poor coordination between the procurement schedule and the construction programme. The most effective mitigation is to lock down the electrical specification — cable types and sizes, breaker ratings, panel configurations — before the first purchase order is raised. Changes after this point typically cascade through the entire bill of materials and create expensive re-specification work.

Phased delivery aligned to the construction programme is critical for large projects. Delivering all materials to site before they are needed creates storage, security, and damage risks on busy sites. Work with your supplier to agree a delivery schedule tied to construction milestones — for example, distribution boards delivered when the electrical riser shaft is ready, cable delivered floor by floor as the structure rises. A good supplier will hold stock on your behalf and release to programme, provided you have placed firm orders with sufficient advance notice.

Lead times for specialist equipment — medium-voltage switchgear, large transformers, custom panel boards — can range from 8 to 20 weeks from order to delivery. Contractors who discover this after the programme has been fixed face either programme delays or expensive airfreight to compensate. Map your programme against all long-lead items at the start of the project, place orders early, and build appropriate float into your schedule. At Kali Electric, our sales engineers can provide realistic lead time guidance for every item in your bill of materials and flag any items that need early procurement attention.