[email protected]
Member
Please i need help how much power does a 400w magnetic ballast use 18hrs on 6 off
help!needed!please!!!
help!needed!please!!!
Powr help needed please!!!!
- Thread starter [email protected]
- Start date
ak.fortyseven
Well-Known Member
Electricity is priced per kilowatt-hour (kwh), which is 1,000 watts used for one hour, or 100 watts for 10 hours, or 1 watt for 1,000 hours. To get kwh for a particular use, multiply the wattage by the number of hours of operation, then divide by 1,000.
A 400-watt bulb would use 1 kWh each 2.5 hours it's on. For 16 hours that would be 6.4 kwh.
Find out how much your electric provider charges per kilowatt-hour and multiply that by the total number of kwh used. If you're in the northwest United States, there's a good chance your cost averages under 10 cents per kwh. So you're probably looking at less than $1 a day for one 400-watt bulb.
A 400-watt bulb would use 1 kWh each 2.5 hours it's on. For 16 hours that would be 6.4 kwh.
Find out how much your electric provider charges per kilowatt-hour and multiply that by the total number of kwh used. If you're in the northwest United States, there's a good chance your cost averages under 10 cents per kwh. So you're probably looking at less than $1 a day for one 400-watt bulb.
Frito Bandito420
Active Member
(Watts x Hours /1000) x $/kWh = Operating Cost per hour
[email protected]
Member
awsome thanks alot some guy tried telling me it would cost $300 per month.
