Single feeder supplying two dwelling units uses which load value?

• A. Lesser of the two loads
• B. Greater of the two loads
• C. Sum of the two loads
• D. Product of the two loads

Answer: (B)

When a single feeder serves two dwelling units, the capacity is governed by the larger single-unit demand. The feeder must be able to supply the worst-case load of any one unit, and the other unit’s load can be accommodated within that same capacity (often using demand factors or non-simultaneous loading). So you size the feeder for the greater of the two loads to avoid overloading.

For example, if one dwelling could draw up to a higher amount than the other, the feeder is sized to meet that higher demand. Summing the two loads would assume both are at full demand simultaneously and is not the basis for this sizing in many multi‑unit feeder situations. The lesser load does not set the required capacity, and the product option doesn’t apply here.