Calculations for Commercial

Question 1

Demand factors for non-dwelling recept. loads

Answer 1

220.44

1st 10kva at 100%
Remainder at 50%

Question 2

In no case shall the feeder demand load for commercial cooking equipment be less than

Answer 2

The summation of the two largest cooking equipment’s nameplate

Question 3

Recepts. for heavy duty lampholders will be considered ___va

Answer 3

600

Question 4

Show window lighting will be calculated on the basis of ___va per ___ linear ft

Answer 4

200

1

Question 5

Lighting/Receptacle demand factors of Table 220.42 can be applied to

Answer 5

Dwelling units, hotels/motels, hospitals, and storage warehouses

Question 6

The NEC requires a sign circuit for commercial buildings that are accessible to pedestrians. Their rating shall be considered

Answer 6

20a, 1200va

Question 7

For a multi-outlet assembly used with simultaneous appliances, it’s load shall be considered

Answer 7

180va per ft or fraction there of

Question 8

The demand factors for recepts. in Table 220.44 are

Answer 8

1st 10kva at 100%

Remainder at 50%

Question 9

The receptacle demand load for banks and offices is considered the larger of

Answer 9

The known number of recepts x 180va, 220.44

1va per sq ft

Question 10

Motors, when calculated for a service, have their demand load multiplied by

Answer 10

125%

Question 11

The sign ckt is considered a

Answer 11

continuous load

Question 12

When the OCPD is rated over 800a, the wire must be sized to

Answer 12

match the rating of the OCPD

Question 13

The smallest conductor that can be paralleled is

Answer 13

1/0

Question 14

A neutral conductor must be sized no smaller than per Table

Answer 14

250.102(C)(1)

Question 15

Transformers are sized by

Answer 15

100% of the continuous load and noncontinuous load