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RECEPTACLE OUTLETS
220.14(I)
A general-purpose branch circuit shall be calculated at 180 VA for each outlet where supplying more than one outlet utilizing cord-and-plug connected items. The number of outlets shall be calculated at 180 VA times noncontinuous operation at 100 percent and continuous operation at 125 percent.
Note, overcurrent protection devices and conductors shall be sized at 125 percent. (See Figure 14-25)
For example: What is the load for 8 receptacle outlets that are supplying cord-and-plug connected loads used at noncontinuous operation?
Step 1: Finding VA
Load = No. of outlets x 180 VA x 100%
Load = 8 x 180 VA x 100%
Load = 1440 VA
Solution: The load is 1440 VA.
For example: How many noncontinuous duty receptacle outlets can be connected to a 20 amp general-purpose branch circuit?
Step 1: Finding amperage of outlets
220.14(I)
180 VA ÷ 120 V = 1.5 A
Step 2: Finding number of outlets
220.14(I) and 210.11(A)
20 A OCPD ÷ 1.5 A x 100% = 13
Solution: The number of outlets permitted on a 20 amp overcurrent protection device is 13.
For example: How many continuous-duty receptacle outlets can be connected to a 20 amp general-purpose branch circuit?
Step 1: Finding amperage of outlets
220.14(I)
180 VA ÷ 120 V = 1.5 A
Step 2: Finding number of outlets
220.14(I) and 210.11(A)
20 A OCPD ÷ 1.5 A x 125% = 10
Solution: The number of outlets permitted on a 20 amp overcurrent protection device is 10.
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