For lighting using CFL bulbs you can use 10 square feet per watt. The volt-amps is the volts times the amps, or the watts divided by the power factor. Most CFL bulbs are marked with the voltage and the current.
If you tell us the starting temperature and the finishing temperature and the specific heat of the material this 200 sq ft is made of then we'd have a chance of answering this one. But let's say that you're talking about a room (you didn't say you were but let's assume this), then a rule of thumb calculation, where the assumption is made that it takes 10 watts to heat a square foot of room, would show that you'd need 2,000 watts.
How many watts of what service? I hardly believe there is any law that forces home owners to waste a certain amount of power. Also, in most of the world (the notable exception being the United States), areas are measured in square meters, not in square feet.
No, there are 144 square inches in 1 square foot. This is because 1 square foot is equivalent to a square with sides that are 12 inches long, making the total area 144 square inches.
To calculate how many feet of electric baseboard heat you need, you can use the formula: Total heat output (in watts) divided by the wattage per linear foot of the baseboard heater. This will give you the total length of baseboard heater required in feet for your specific heating needs.
The wattage required to heat 700 square feet depends on factors like insulation, ceiling height, and climate. A general rule of thumb is to use about 10 watts per square foot for heating, which would mean approximately 7,000 watts for 700 square feet. However, this can vary, so it's best to consult with a heating professional for a more tailored assessment based on specific conditions.
To determine the minimum number of 15-ampere lighting branch circuits required for a 3,500 square foot occupied area, you can refer to the National Electrical Code (NEC). Typically, one 15-amp circuit can handle up to 1,500 watts of lighting. Assuming a general guideline of 3 watts per square foot for lighting, you would need approximately 11,667 watts for 3,500 square feet, which translates to about 8 circuits (11,667 watts ÷ 1,500 watts per circuit). Thus, a minimum of 8 lighting branch circuits is recommended.
40 watts/sq ft for 1700 sq ft = 68,000 watts or 68 kw. If you are going to keep this on 24/7, then the number of hours is 31 x 24 =744 (I have assumed 31 days in the month), so the usage is simply 68 x 744 = 50592 kwh
A square foot is 0.0929 square metres approx, whatever the total is.
If this question is about electrical home heating then use ten watts per square foot.
That's a total of 2560 square feet.
A total of 160 square feet.
Granite is figured at 168 pounds per cubic foot. If you know the thickness, you can determine the weight per square foot.
If you tell us the starting temperature and the finishing temperature and the specific heat of the material this 200 sq ft is made of then we'd have a chance of answering this one. But let's say that you're talking about a room (you didn't say you were but let's assume this), then a rule of thumb calculation, where the assumption is made that it takes 10 watts to heat a square foot of room, would show that you'd need 2,000 watts.
Granite is figured at 168 pounds per cubic foot. If you know the thickness, you can determine the weight per square foot.
1 square foot is 12" x 12" or 144 square inches in total.
Watts per square foot
How many watts of what service? I hardly believe there is any law that forces home owners to waste a certain amount of power. Also, in most of the world (the notable exception being the United States), areas are measured in square meters, not in square feet.