YaHooka Forums - View Single Post

**farmergiles** · 03-19-2009, 04:56 PM

If I`ve got this straight

3 x 13 = 39
+ 20 + 20 = 79 watts

Is not worth worrying about.

Lets see

Power = Voltage x Current

Assuming Voltage = 240

79 = 240 x Current

Current = 0.33 Amps.

Assuming your outlet is good for 13 Amps even with massive allowances for surging when you turn on, the current will be negligible.

It`s good to consider this stuff though.

Edit- In answer to your other questions-

2- Impossible to tell without knowing more about your wiring. Unless it was wired up by a cowboy it should be good for 13A (or at least it should be in my locale- don`t know where you are).
However I wouldn`t load it that much as there may be surges on strike up.

eg
P=VI.
P=240 x 13 = 3120

So allowing for surge say 50% 2000 watts ish.

As I say though, that`s a complete guess without seeing your wiring.

3- No, not unless you keep the plants very small, I`d recommend a 400w sodium bulb for 6 plants or at least 200w of flouro`s.

4- Again impossible to say for sure but 400w should be fine unless your wiring is totally farked.

03-19-2009, 04:56 PM	#15 (permalink)
farmergiles Yahookan Join Date: Sep 2006 Location: In My Fire Engine Posts: 7,134 Thanks: 2,040 Thanked 3,164 Times in 2,190 Posts	If I`ve got this straight 3 x 13 = 39 + 20 + 20 = 79 watts Is not worth worrying about. Lets see Power = Voltage x Current Assuming Voltage = 240 79 = 240 x Current Current = 0.33 Amps. Assuming your outlet is good for 13 Amps even with massive allowances for surging when you turn on, the current will be negligible. It`s good to consider this stuff though. Edit- In answer to your other questions- 2- Impossible to tell without knowing more about your wiring. Unless it was wired up by a cowboy it should be good for 13A (or at least it should be in my locale- don`t know where you are). However I wouldn`t load it that much as there may be surges on strike up. eg P=VI. P=240 x 13 = 3120 So allowing for surge say 50% 2000 watts ish. As I say though, that`s a complete guess without seeing your wiring. 3- No, not unless you keep the plants very small, I`d recommend a 400w sodium bulb for 6 plants or at least 200w of flouro`s. 4- Again impossible to say for sure but 400w should be fine unless your wiring is totally farked. __________________ Cultivate a stoic calmness *Fuck the Monkeys* Last edited by farmergiles; 03-19-2009 at 05:08 PM.