Use the first table here to figure the
power costs for your grow room.
Use the second section to safely figure the
electrical needs/loads in your grow room.
Please read through it entirely as it has valuable fire safety info.
Your monthly power bill will tell you what your power company
is charging you per month for each kilowatt.
Example: This table is figured at .01 (1 cent) per kwh for ease of
determining costs for your bill. In California you may be paying as
much as .20 (20 cents) per kw hour. So.......check your bill and
multiply your cost per kw hour times any figure in this section to get
the actual cost of your electrical expenses.......
A 1000 Watt bulb on 24 hours a day for 1 month will cost $07.20
18/6 Light schedule will cost $5.40
12/12 Light schedule will cost $3.60
A 600 Watt bulb on 24 hours will cost $04.32 a month
18/6 Light schedule will cost $3.24
12/12 Light schedule will cost $2.16
A 430 Watt bulb on 24 hours will cost $03.10 a month.
18/6 Light schedule will cost $2.32
12/12 Light schedule will cost $1.55
A 400 Watt bulb on 24 hours will cost $02.88 a month
18/6 Light schedule will cost $2.16
12/12 Light schedule will cost $1.44
A 250 Watt bulb on 24 hours will cost $1.80 a month
18/6 Light Schedule will cost $1.35
12/12 Light schedule will cost $0.90
Example: This table figured at .06 Cent Per kwh
which is the national average cost of power:
A 1000 Watt bulb on 24 hours will cost $43.20 per month
18/6 Light schedule will cost $32.40
12/12 Light schedule will cost $21.60
A 600 Watt bulb on 24 hours will cost $25.92 per month
18/6 Light schedule will cost $19.44
12/12 Light schedule will cost $12.96
A 430 Watt bulb on 24 hours will cost $18.58 per month.
18/6 Light schedule will cost $13.92
12/12 Light schedule will cost $9.29
A 400 Watt bulb on 24 hours will cost $17.28 per month
18/6 Light schedule will cost $12.96
12/12 Light schedule will cost $8.64
A 250 Watt bulb on 24 hours will cost $10.80 per month
18/6 Light schedule will cost $8.10
12/12 Light schedule will cost $5.40
FIRE SAFETY 101: Electrical loads
Here's something to help you with electrical loads....... AMPS
To figure how many amps you'll use just follow this very simple
formula, please use a calculator as you don't want to err here.
Divide watts by volts to equal amps, a 1000 watt fixture
in the US @ 120 volts would be figured like this.......
1000 divided by 120 = 8.33 amps
400watt fixtures.......
400 divided by 120 = 3.33 amps
It's easy to see that you can only safely run one 1000 watt bulb
on any single household (usually 15 amp) circuit or breaker. Using
common sense here will prevent you from plunging your plants into
unscheduled darkness due to a blown fuse or tripping a breaker,
or worse yet starting a fire in your own crib.
Please also be aware that it isn't a good idea to load
any circuit past 85% of its capacity. So on a 15 amp
circuit or breaker no more than 12.75 amps. This should stop
any small power spikes or surges that commonly occur
from blowing a fuse or tripping a breaker. Some fan motors
have power draws of 3amps, be careful figuring these in too.
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I'll be sure to post the charges when I get my new bill to help others factor in the charges for fuel and charges between the 1st 1,000 KWH's used and every 1,000 KWH's after that. I'll be sure to post the charges when I get my new bill to help others factor in the charges for fuel and charges between the 1st 1,000 KWH's used and every 1,000 KWH's after that.
