Common Wattage Requirements

Common Wattage Requirements

The Daily energy values listed here are for the most efficient units in their class. These ratings are only estimates.

This is a typical amperage draws list for appliances and accessories commonly used in RV’s. This is just a basic guide to assist you in how many amps you are using at any given time. If you need to know exact amperage ratings you can check the data plate on any motors, appliances or electronic equipment you are using. If you can’t locate a data plate with this information check the appliance or electronic equipment owner’s manual. This information might provide wattage requirements rather than amps. Here are a couple of simple formulas to help you convert some common electrical terms.

Wattage % Volts = Amps
Amps X Volts = Wattage

12 Volt DC Amp Ratings

Aisle Light  1 Amp
CO Detector  1 Amp
Fluorescent Light  1-2 Amps
Furnace  10-12 Amps
LP Gas Leak Detector  1 Amp
Overhead lights (Per Bulb)  1 Amp
Porch Light  1 Amp
Power Roof Vent  1.5 Amps
Radio/Stereo  4 Amps
Range Hood (Fan & Light)  2-3 Amps
Refrigerator (LP Gas Mode)  1.5- 2 Amps
Security System  1 Amp
Television (12 volt)  4-5 Amps
TV Antenna Booster  1 Amp
TV Antenna Booster 12 Volt outlet  8 Amps
Variable Speed Ceiling / Vent Fan  4 Amps
VCR Recorder / Player  2 Amps
Water Pump  4 Amp

One other thing to keep in mind is many RV appliances require more amps to start the appliance than they do to run the appliance. A roof air conditioner can draw 16 amps to start, but may only use 13 amps once it is running.

120 Volt AC Amp Ratings 

Air Conditioner  12-16 Amps
Blender  5-6 Amps
Coffee Maker  5-8 Amps
Compact Disc Player  1 Amp
Computer (Laptop)  2-3 Amps
Converter  1-8 Amps
Crock Pot  1-2 Amps
Curling Iron  1 Amp
Drill  2-6 Amps
Electric Blanket  0.5-1.5 Amps
Electric Fan  1 Amp
Electric Water Heater  9-13 Amps
Electric Skillet  6-12 Amps
Hair Dryer  5-12 Amps
Iron  5-10 Amps
Microwave  8-13 Amps
Refrigerator in AC mode  5-8 Amps
Space Heater  8-13 Amps
Television  1.5-4 Amps
Toaster  7-10 Amps
Vacuum  2-6 Amps
VCR  1-2 Amps
Washer/Dryer  14-16Amps