Which statement about Table 220.55 is not true?

Which statement about Table 220.55 is not true?

• A. A demand factor from Table 220.55 could be applied to a household counter-mounted cooking unit of 1,760 watts.
• B. Ten household clothes dryers have a demand factor of 50%.
• C. A demand factor from Table 220.55 could be applied to a 13/4 kW wall-mounted oven.
• D. Table 220.55 is permitted to be used for a branch circuit to a household range.

Answer: (C)

Table 220.55 sets demand factors for cooking appliances in dwelling units, specifically for household ranges and counter-mounted cooking units. It is used to size the load by applying a factor to the combined rating of those cooking appliances, rather than simply summing every full-rated wattage. This table is intended for ranges and similar counter-mounted units and is also used when sizing a branch circuit serving a household range. Because a wall-mounted oven is not included in the scope of Table 220.55, you wouldn’t apply a 220.55 demand factor to it. A wall-mounted oven is a different type of appliance, and its load is determined by other provisions, not this table. Therefore, stating that a demand factor from Table 220.55 could be applied to a 3.25 kW wall-mounted oven is not true. The other scenarios align with the table’s purpose: a counter-mounted unit of 1.76 kW falls within the kinds of appliances 220.55 covers, and the table can be used to size a branch circuit supplying a household range.

Table 220.55 sets demand factors for cooking appliances in dwelling units, specifically for household ranges and counter-mounted cooking units. It is used to size the load by applying a factor to the combined rating of those cooking appliances, rather than simply summing every full-rated wattage. This table is intended for ranges and similar counter-mounted units and is also used when sizing a branch circuit serving a household range.

Because a wall-mounted oven is not included in the scope of Table 220.55, you wouldn’t apply a 220.55 demand factor to it. A wall-mounted oven is a different type of appliance, and its load is determined by other provisions, not this table. Therefore, stating that a demand factor from Table 220.55 could be applied to a 3.25 kW wall-mounted oven is not true.

The other scenarios align with the table’s purpose: a counter-mounted unit of 1.76 kW falls within the kinds of appliances 220.55 covers, and the table can be used to size a branch circuit supplying a household range.