For a cooking range rated at 8.75 kVA or more, what is the minimum branch-circuit rating?

For a cooking range rated at 8.75 kVA or more, what is the minimum branch-circuit rating?

• A. 30 A
• B. 50 A
• C. 60 A
• D. 40 A

Answer: (D)

The main idea is how the NEC specifies the minimum branch-circuit size for a cooking range based on its nameplate rating. When a range is 8.75 kVA or more, the table calls for a 40-amp branch circuit. This is about ensuring the wiring and protection can safely handle the typical load and any short-term surges without overheating. For this range, 8.75 kVA at 240 V draws roughly 36.5 A (8750 W divided by 240 V). A 40 A branch circuit provides the necessary headroom, so it’s the smallest size that can accommodate the load safely. A 30 A circuit would be undersized for this range, while 50 A or 60 A would work but aren’t the minimum required by the rule. Using 40 A also aligns with common conductor and protection choices (for example, 8 AWG copper on a 40 A OCPD).

The main idea is how the NEC specifies the minimum branch-circuit size for a cooking range based on its nameplate rating. When a range is 8.75 kVA or more, the table calls for a 40-amp branch circuit. This is about ensuring the wiring and protection can safely handle the typical load and any short-term surges without overheating.

For this range, 8.75 kVA at 240 V draws roughly 36.5 A (8750 W divided by 240 V). A 40 A branch circuit provides the necessary headroom, so it’s the smallest size that can accommodate the load safely. A 30 A circuit would be undersized for this range, while 50 A or 60 A would work but aren’t the minimum required by the rule. Using 40 A also aligns with common conductor and protection choices (for example, 8 AWG copper on a 40 A OCPD).