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Assuming it for a domestic appliance, I'd for something cheap, reliable and safe like: http://www.energyoptimizersdirect.co.uk/acatalog/Energy_Devices.html Don't go buying a watt metre/meter with probes and sticking them into anything that's plugged into the mains!! Electrocution is inevitable. Good luck.
What else can I help you with?
How many voltmeter and ammeter are in dc watt meter?
There is no volt meter or amp meter in a DC watt meter.
Why you reset the zero point on the watt meter?
So that the result that you find on the watt meter after resetting it will be accurate
What is the relation between Newton meter and watt?
1 Watt = 1 Joule / Second = 1 Newton-meter / Second.
What is a meter socket?
The electrical power that you use from the utility company has to be metered. This is done with a plug in watt meter. The meter socket is what holds the electrical watt meter. It is this meter that the meter reader reads to give you your monthly billing for the electricity that you used.
Does watt meter reading go negative?
Yes!
If you buy a two sub woofers with 400 Watt continuous and 1200 watt peak power how many watt amp should you buy?
800 watt should be fine
If this month the meter read 2714 watt hour at 0.08 per watt what will Ralph bill this month?
Ralph who? Where does he live?
How do you safely remove a watt meter when the meter socket is energized?
First, shut off all power to your house.
What are ML CV in watt meter?
main , load, common, voltage
What is the function of watt meter?
The wattmeter is an instrument to measure the electrical power.
How do you know how many amps an appliance is using?
If the appliance tells you how many watts it's supposed to use you can buy a watt-meter to measure how many watts the appliance is using buy plugging in the meter into the wall and then plugging the appliance into the meter. A popular brand is "Kill A Watt", it meter can be bought on E-bay for under $25.
How does watt and joule relate?
The Joule is a unit of energy, while the Watt is a unit of power. Joule is the alternate name for a Newton-meter of energy, and Watt is the alternate name for a Newton-meter per second of power. This means that one Watt is one Joule per second; a 100-Watt light bulb converts 100 Joules of electrical energy every second into heat energy and light energy.
