WIRING REQUIREMENTS FOR HOUSEHOLD CIRCUITS

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Cathleen Craig
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1 WIRING REQUIREMENTS FOR HOUSEHOLD CIRCUITS Each appliance listed in Table C2.4 needs an individual circuit. Protect each appliance with a delay-type fuse or breaker of the size stated by the manufacturer. In the absence of manufacturer recommendation use the size stated in Table C2.4. The delay-type fuses and breakers withstand momentary starting loads and yet protect against overloads and short circuits. Ampere rating of delay-type breakers or fuses for appliances should not be more than 25-percent greater than the appliance rating. For example, if a permanently installed waste-disposer motor is rated at 8 amperes, the delay-type breaker or fuse should not be over 10 amperes; 8 plus 1/4 of 8. Many high-speed electric clothes dryers require range-type outlets. All appliances on 120 volts are to have three-wire grounding-type outlets. Those on 240 volts have a separate ground wire. Estimated Electrical Power Requirements The following are estimated electrical power requirements for various equipment. For specific design applications be sure to consult the literature from the manufacturer for the specific equipment. This is especially important when installing large equipment. The average kilowatt-hours per month shown in the tables may be used in estimating the costs of operation for the equipment shown. The kilowatt-hours per month when multiplied by the electric cost per kilowatt-hour will give the monthly cost of operating the equipment. Table C2.3: Approximate Power Requirements for Equipment Used on the Farm Average Household Equipment (watts) kwhr. per mo. Air conditioner, window unit 3/4-1-1/2 ton Baby bottle warmer Blanket, automatic Bottle sterilizer Broiler 1,300-1, Can opener /2 Clock Clothes dryer 4,000-6, Clippers ½

The delay-type fuses and breakers withstand momentary starting loads and yet protect against overloads and short circuits.

2 Table C2.3: Approximate Power Requirements for Equipment Used on the Farm (continued) Average Household Equipment (watts) kwhr. per mo. Coffee maker 600-1, Coffee percolator Corn popper Curling iron /2 Dehumidifier Dishwasher 1/8-1/4 HP 30 Electrocuter, insect Electronic oven 3,000-7, Fan, attic 1/6-3/4 HP Fan, 8"-16" Food blender /2 Foot warmer Floor polisher Freezer, food, 5-30 cu. ft Freezer, ice cream /2 Fryer, cooker 1,000-1,500 5 Furnace, electric control Furnace, oil burner Furnace, blower Furnace, stoker Garbage disposal equipment 1/4-1/3 HP 3 Griddle 450-1,100 5 Grill 650-1,300 5 Hair dryer 200-1,200 1/2-6 Heat lamp Heater, portable 660-2, Heating pad Hot plate 500-1, House heating 8,000-15,000 1,000-2,500 Humidifier Iron, hand 600-1,

oven 3,000-7,000 100 Fan, attic 1/6-3/4 HP 60-90 Fan, 8"-16" 35-210 4-10 Food blender 200-300 1/2 Foot warmer 50-100 1 Floor polisher 200-400 1 Freezer, food, 5-30 cu. ft.

3 Table C2.3:Approximate Power Requirements for Equipment Used on the Farm (continued) Average Household Equipment (watts) kwhr. per mo. Ironer 1,000-3, Knife sharpener 125 1/4 Lighting Mixer, food Movie projector 300-1,000 1 Radio, table Range 8,500-16, Record player Refrigerator Refrigerator-freezer Refrigerator, no-frost Roaster 1,000-1, Sauce pan 300-1, Sewing machine /2-2 Shaver 12 1/10 Skillet 1,000-1, Sunlamp Television Toaster 500-1, Vaporizer Waffle iron 550-1, Washer, automatic Washer, conventional Water heater 1,200-7, Water pump (shallow) 1/2 HP 5-20 Water pump (deep) 1/3-1 HP Barn Equipment (HP or watts) per unit Barn cleaner 2-5 HP 1/2-1 per cow/mo. Corn, ear crushing 1-5 HP 5 per ton Corn, ear shelling 1/4-2 HP 1 per 300 lbs.

Refrigerator 200-300 25-40 Refrigerator-freezer 250-600 75 Refrigerator, no-frost 300-400 90 Roaster 1,000-1,600 10-40 Sauce pan 300-1,400 2-10 Sewing machine 30-100 1/2-2 Shaver 12 1/10 Skillet

4 Table C2.3: Approximate Power Requirements for Equipment Used on the (continued) Barn Equipment (Hp or watts) per unit Electric fence 7-10 W 7 per mo. Ensilage blowing 3-5 1/2 per ton Feed grinding 1-7-1/2 1/2-1-1/2 per ton Feed mixing 1/2-1 1 per 500 lbs. Barn Equipment (cont.) (HP or watts) per unit Grain cleaning 1/4-1/2 1 per 100 Bu. Milking, portable 1/4-1/2 1-1/2 per cow/mo. Milking, pipeline 1/ /2 per cow/mo. Sheep shearing fractional 1-1/2 per 100 Silo unloader 3-7-1/2 HP 1-5 per ton Silage conveyor 1-3 HP 1-4 per ton Stock tank heater 200-1,500 W up to 200/mo. Yard lights W per mo. Ventilation 1/6-1/3 HP per 20 cows Milkhouse Equipment (HP or watts) per unit Milk cooling 1/2-5 HP 3/4-1-1/2 per 100 lbs. milk Space heater 1,000-3, per year Ventilating fan fractional per mo. Water heater 1,000-5,000 1 per 4 gal.

$Sheep shearing fractional 1-1/2 per 100 Silo unloader 3-7-1/2 HP 1-5 per ton Silage conveyor 1-3 HP 1-4 per ton Stock tank heater 200-1,500 W up to 200/mo. Yard lights 100-500 W per mo.$

5 Table C2.3 Approximate Power Requirements for Equipment Used on the Farm (Continued) Poultry Equipment (HP or watts) per unit Automatic feeder 1/4-1/2 HP per mo. Brooder 200-1,000 W 1/2-1-1/2 per chick per season Burglar alarm W 2 per mo. Debeaker W 1 per 3 hr. Egg Candler W 1 per 15 hr. Egg cleaning or washing fractional HP 1 per 2,000 eggs Egg cooling 1/6-1 HP 1-1/4 per case Poultry Equipment (HP or watts) per unit Night lighting W 10 per mo. per 100 birds Ventilating fan W 1/2-1-1/2 per day day per 1,000 birds Water warming W varies widely

10-30 per mo. Brooder 200-1,000 W 1/2-1-1/2 per chick per season Burglar alarm 10-60 W 2 per mo. Debeaker 200-500 W 1 per 3 hr.

6 Table C2.3 Approximate Power Requirements for Equipment Used on the Farm (Continued) Swine Equipment (HP or watts) per unit Brooding W 35 per brooding period per litter Ventilating fan W 1/2-1-1/2 per day per 50 hogs Water warming 50-1,000 W 30 per brooding period per litter Farm Shop Equipment (HP or watts) per unit Air compressor 1/4-1 HP 1 per 3 hr. Arc welding 37-1/2 100 per year Battery charging W 2 per battery Concrete mixing 1/2-2 HP 1 cu. yard Drill press 1/6-1 HP 1/2 per hr. Fan, 10" W 1 per 20 hr. Grinding, emery wheel 1/4-1/3 HP 5 per mo.

brooding period per litter Ventilating fan 50-300 W 1/2-1-1/2 per day per 50 hogs Water warming 50-1,000 W 30 per brooding period per litter Farm

7 Table C2.3 Approximate Power Requirements for Equipment Used on the Farm (Continued) Farm Shop Equipment (HP or watts) per unit Heater, portable 1,000-3,000 W 10 per mo. Heater, engine W 1 per 5 hr. Lathe 1/4-1 HP 1 per 3 hr. Lighting W 4 per mo. Sawing, circular 8"-10" 1/3-1/2 HP 1/2 per hr. Sawing, jig 1/4-1/3 HP 1 per 3 hr. Soldering, iron W 1 per 5 hr. Miscellaneous (HP or watts) per unit Farm motors 1/2-5 HP 1 per HP per hr. Insect trap (black light lamp) W 1/3 per night Irrigating 1 HP up 1 per HP per hr. Snow melting: heating cable imbedded in concrete 25 W per sq. ft. 2.5 per 100 sq.ft. Soil heating, hotbed 400 W 1 per day/season Wood sawing 1-5 HP 2 per cord Section Break (Next Page)

Soldering, iron 60-500 W 1 per 5 hr. Miscellaneous (HP or watts) per unit Farm motors 1/2-5 HP 1 per HP per hr.

8 Table C2.4: Electrical Power and Wiring Requirements for Household Appliances on Individual Circuits Circuit Probable Outlet Ampere Number of Appliances on Voltage Wattage Rating Wires Individual Circuits Required (watts) (amperes) (numbers) (volts) AWG Wire Size (AWG) Overload- Protection Device Size (amperes) Clothes dryer Grnd * ** Washer Grnd Water heater Grnd Range Grnd * ** Separate oven Grnd 8 30 Surface units Grnd 8 30 Dishwasher Grnd Waste disposer Grnd 12 ** Freezer Grnd 12 ** Air conditioner (room) Grnd 12 ** Air conditioner Grnd * ** (central) Furnace unit Grnd 12 ** Electric heater Grnd * ** * Wire size varies, see table C2.11 for wire sizes ** Size varies with appliance, use manufacturer s recommended size or a minimum of 25-percent larger than the appliance electric current rating.

Required (watts) (amperes) (numbers) (volts) AWG Wire Size (AWG) Overload- Protection Device Size (amperes) Clothes dryer 6000 240 30 3 + Grnd * ** Washer 500 120 20 2 + Grnd 12 20 Water heater 5000

9 Table C2.5: Electrical Power Requirements of Some Household Appliances Which Do Not Need Individual Circuits Appliance Watts Appliance Watts Coffee maker 700Lighting, fixed 1,200 Lighting, portable 1,200 Deep fat fryer 1,350 Dehumidifier 300 Mixer 120 Electric blanket 160 Phonograph 75 Fan: portable 100 Radio 100 kitchen exhaust 100 Refrigerator 300 attic 345 Roaster 1,650 Frying pan 1,100 Floor lamp, single 200 Sewing machine 75 Floor lamp, 3-way 300 Steam iron 1,000 Floor polisher 200 Sump pump 300 Sun lamp 500 Garage door opener 125 Grill 800 Table lamp 100 Television 350 Iron 1,000 Toaster 1,000 Ironer 1,650 Vacuum cleaner 650 Juice extractor 300 Waffle iron 1,000

1,200 Lighting, portable 1,200 Deep fat fryer 1,350 Dehumidifier 300 Mixer 120 Electric blanket 160 Phonograph 75 Fan: portable 100 Radio 100 kitchen exhaust 100

Energy Sense. Central Hudson COMPANY. How Much Energy Do Your Appliances and Electronics Use? www.centralhudson.com

Energy Sense. Central Hudson COMPANY. How Much Energy Do Your Appliances and Electronics Use? www.centralhudson.com Energy Sense How Much Energy Do Your Appliances and Electronics Use? People. Power. Possibilities. Central Hudson A COMPANY www.centralhudson.com The amount of electricity you use is measured in and priced