CSLB C-46 Solar ContractorPlanning and EstimatingMedium
A C-46 contractor is preparing a bid for a new residential PV installation. The client is highly budget-conscious but still wants a reliable system. The contractor is considering options to reduce the overall project cost without compromising safety or significant performance. Which of the following approaches is an example of 'value engineering' in this context?
- ASelecting a slightly less efficient but more cost-effective module brand that still meets production goals.
- BForgoing a structural analysis to save on engineering fees.
- CUsing undersized conductors to save on material costs.
- DOmitting a rapid shutdown device to reduce equipment expenses.
Show answer & explanationAnswer & explanation
Correct answer: A. Selecting a slightly less efficient but more cost-effective module brand that still meets production goals.
Value engineering aims to optimize costs while maintaining or improving functionality and quality. Selecting a slightly less efficient but more cost-effective module brand that still meets the client's energy production goals is a classic example, as it reduces cost without sacrificing essential performance or safety.
Why the other options are wrong
- B. Forgoing a structural analysis compromises safety and code compliance, making it a dangerous cost-cutting measure, not value engineering.
- C. Using undersized conductors compromises safety and performance (voltage drop) and is not value engineering.
- D. Omitting a rapid shutdown device compromises safety and violates NEC requirements, so it is not value engineering.
Value Engineering in PV
A systematic method to improve the 'value' of goods or products and services by examining their function. Value, in this case, is the ratio of function to cost.
- Focuses on optimizing cost without sacrificing essential function or quality.
- Involves analyzing components and processes for cost-saving alternatives.
- Distinguished from simple cost-cutting by its emphasis on maintaining value.
Memory trick: Value Engineering: Function Over Cost.