An office building has a calculated receptacle load of 65 kVA, what is the permitted demand for these receptacles?

Prepare for the Independent Electrical Contractors (IEC) Year 4 Exam. Access flashcards, multiple choice questions, and detailed explanations. Enhance your readiness and achieve your certification!

Multiple Choice

An office building has a calculated receptacle load of 65 kVA, what is the permitted demand for these receptacles?

Explanation:
Understanding demand it is about reflecting typical usage rather than assuming every receptacle is drawing full power at the same time. For office receptacle loads, there is a factor used to estimate the maximum expected demand that is less than the total calculated load. Applying that factor to the calculated receptacle load gives the permitted demand. Here, 65 kVA multiplied by the demand factor (about 0.58) yields roughly 37.7 kVA, which rounds to 37.5 kVA. That’s why 37.5 kVA is the correct permitted demand. Using the full 65 kVA would ignore the diversification of usage, and the other numbers come from applying incorrect multipliers or misinterpreting the load.

Understanding demand it is about reflecting typical usage rather than assuming every receptacle is drawing full power at the same time. For office receptacle loads, there is a factor used to estimate the maximum expected demand that is less than the total calculated load. Applying that factor to the calculated receptacle load gives the permitted demand.

Here, 65 kVA multiplied by the demand factor (about 0.58) yields roughly 37.7 kVA, which rounds to 37.5 kVA. That’s why 37.5 kVA is the correct permitted demand. Using the full 65 kVA would ignore the diversification of usage, and the other numbers come from applying incorrect multipliers or misinterpreting the load.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy