The Electrical Code

220.44 Receptacle Loads — Other Than Dwelling Units. So this article gives use how receptacle loads should be calculated with the understanding that there is demand factor in the mix. Here is where the code can be a little misunderstood. This code tells use to refer back to 220.14(H) and (I) and look at the table 220.42 and 220.44. To better understand how and why you must first understand that we take for granted that a convenience outlets only gets used every once and a will.

“Receptacle loads calculated in accordance with 220.14(H) and (I) shall be permitted to be made subject to the demand factors given in Table 220.42 or Table 220.44.”

Table 220.42 Lighting Load Demand Factors

Portion of Lighting Load to Which Demand Factor

Types of Occupancy

Applies (volt-Amperes)

Demand Factor(%)

Dwelling Units

First 3000

From 3001 to 120,000

Remainder over 120,000

100

35

25

Hospitals

First 50,000

Remainder over 50,000

50

40

Hotels and Motels,

Including apt. houses without provisions for cooking by tentants

First 20,000

From 20,001 to 100,000

Remainder over 100,000

50

40

30

Warehouses (storage)

First 12,500

Remainder over 12,500

100

50

All Others

Total volt-amperes

100

Table 220.44 Demand Factors for Non-Dwelling Receptacle Loads

Portion of receptacle loads to which demand factor applies

(Volt-Amperes)

Demand Factor(%)

First 10kVA or less

100

Remainder over 10kVA

50