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| Table 1: Cost comparison for a 20 m lighting run | ||
| Cable distribution | Busbar trunking | |
| Estimated time to install (h) | 35·44 | 7·25 |
| Estimated material cost (£) | 148·56 | 288·86 |
| Estimated labour cost (£) | 354·40 | 72·40 |
| Estimated total installed cost (£) | 502·96 | 361·36 |
| Total cost saving (£) | 141·60 | |
| Time saving (h) | 28·19 | |
| Time balance value (£) | 281·90 | |