The cost to run a 400 watt HPS light will depend on your electricity rate. On average, running a 400 watt HPS light for 1 hour will cost around $0.06 to $0.12. To calculate the monthly cost, multiply the hourly cost by the number of hours the light is on each day, then multiply by 30 days.
To calculate a cost in kW/h a time interval has to be stated. How long is the 400 watt heater going to be on in a 24 hour period. You also have to state what you are being charged from the utility power company per kW/h.
Per hour the answer is 400 watt-hours or 0.4 kW-hours (or units).
400 watts, but has capability up to 460 watts.
A 400 watt inverter can run small electronic devices such as laptops, cell phones, cameras, and smaller appliances like a fan or a small TV. It may not be powerful enough to run larger appliances like refrigerators or microwaves. It's important to check the power consumption of your devices to ensure they can be safely powered by a 400 watt inverter.
It is recommended to transition to a 400 watt HPS light from germination when the seedlings have developed their first set of true leaves. This is usually around 2-3 weeks after germination. The increased light intensity can help support healthy growth as the plants enter the vegetative stage.
To calculate a cost in kW/h a time interval has to be stated. How long is the 400 watt heater going to be on in a 24 hour period. You also have to state what you are being charged from the utility power company per kW/h.
This is a bit less light than a 40W incandescent bulb (much less than a 9-watt CFL bulb, but twice as much as a 5-watt CFL mini-bulb).
1 Joule is 1 Watt-Second. 1 Watt Hour is 3600 Watt-Second or 3600 Joules. 400 Watt-Hours is 1440000 Joules.
A 400 watt Mercury vapor light bulb produces roughly 23,000 lumens. In comparison to a 400 watt metal haloid and or high-pressure sodium, not as good. Metal haliod and high-pressure sodium produces 30,000 lumens.
Per hour the answer is 400 watt-hours or 0.4 kW-hours (or units).
Yes, provided the bulb types are compatible with the 400 watt ballast.
It will power two 400 watt lamps.
400 watts, but has capability up to 460 watts.
A 400 watt inverter can run small electronic devices such as laptops, cell phones, cameras, and smaller appliances like a fan or a small TV. It may not be powerful enough to run larger appliances like refrigerators or microwaves. It's important to check the power consumption of your devices to ensure they can be safely powered by a 400 watt inverter.
about 400
400$
$400