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If you know the wattage of a device and would like to know the amperage the device draws use the following formula. I = W/E, Amps = Watts/Volts. Once you know the amperage the wire is sized accordingly. For the electrical trade #14 is rated at 15 amps and #12 is rated at 20 amps.
For smaller size wires see Sources and Related linksbelow
What else can I help you with?
How many watts in a 320 volt dishwasher?
The rated voltage of an appliance is no guide to its power rating. To find out the power (watts), you will need to look at your washing machine's nameplate, which will indicate both its rated voltage and its rated power.
What are Electrical devices are rated in according to the amount of energy per second that they need to operate?
watts
Can you use 20 watts or 30 watts in a fuse?
No, watts are a measure of power while fuses are rated in amperes (amps). To determine the fuse rating, you need to calculate the current in amps by dividing the power in watts by the voltage. Then, choose a fuse that is rated equal to or slightly higher than the calculated current in amps.
How many watts of led equals 40 watts of fluorescent?
Watts are a unit of power. So 40 watts of power to an LED are the same as 40 watts of power to a fluorescent. Sometimes LEDs are rated in equivalent watts which is an attempt to relate watts to brightness or lumens. You need to compare lumens and the "temperature" of the bulbs in Kelvin to get the comparison I think you are looking for.
Can you use an extention cord with a table top microwave oven?
Yes, and extension cord can be used with a microwave. But it is critical to pick an extension cord with a sufficiently high rating on it. Hardware stores and large home stores have extension cords specifically for use as appliance extension cords. They are heavy, and they have only a single place on the end to plug something into. They cost a bit, but are worth it in peace of mind.
What relay would you use to switch 400 watts of fluorescent lights?
There are special contactor that are made to switch lighting loads. These relays and not wattage rated but amperage rated. Use the following formula with the voltage that you are going to use to find the size of contactor that you need. I = W/E, Amps = Watts/Volts.
What size power cord do i need to use if i want to use my generator to power my RV AC?
To power your RV air conditioner with a generator, you'll typically need a heavy-duty power cord rated for at least 30 amps, especially for most RV AC units. The cord should be at least 10-gauge to handle the high current safely. Ensure the generator's output matches the AC unit’s requirements, usually around 3,000 to 4,000 watts for starting power. Always check both the generator's specifications and your RV's electrical requirements before connecting.
What size generator would you need to power a 200 amp tig welder?
Generators are rated in watts or kilowatts. The formula for watts is W = Amps x Volts. To size a generator for the welder the voltage of the machine must be stated.
Extension Cord?
form_title= Extension Cord form_header= Install extension cords in your office. What size extension cord do you need?*= _ [50] What color extension cord do you need?*= _ [50] Do you need a 3 prong extension cord?*= () Yes () No
What power of amplifier do i need for 6 ohm speakers to connect them to my computer?
Most power amplifiers will handle a load of 6 ohms. The spec you need to look at is the power handling of the speakers. If they are rated for 100 watts program power, then look for an amplifier rated for 100 watts RMS output. Any amplifier can be connected with adapter cables to the typical 1/8" output of your computer.
How many watts does a small car need?
Ignition 30 watts, fans 30 watts, driving lights 30 watts, headlights 100 watts. Total about 200 watts.
If you have 2 subs 1400 watts peak and 700w RMS ea what amp do I need?
To power two subs rated at 700 watts RMS each, you'll need an amplifier that can deliver at least 1400 watts RMS total (700 watts RMS per sub). It's generally recommended to have an amp that provides a little more power than the combined RMS rating for headroom, so an amp rated around 1600 to 1800 watts RMS at the appropriate impedance (likely 2 ohms or 4 ohms, depending on how the subs are wired) would be ideal. Ensure the amp's output matches the impedance of your subs for optimal performance.
