There is debate on this issue. This is my understanding.. amps x volts =watts...we are charged for watts so that would mean there is no difference.. right? But the 240 has less of a voltage drop..therefore it should be more energy efficient to run 240..but wait , it depends on the gage/type of the wire too
An example is : Running 120V over 100 feet of 14AWG at 15Amp gives you a voltage drop of 9.1 Volts, where as running 240 over the same wire gives you a drop of 4.6volts.
Here is a caclulator - http://www.rhtubs.com/voltage-drop_conduit-fill.htm
Perfect, thank you. I just wanted to make sure because with the numbers you posted it would be easy to see that 120v would stomp the 240 originally. I wasn't trying to be a stickler or a dickhead, just wanted to confirm the #'s so I can decide if it's worth it to go 240v. The only reason I can see to go 240v is if you are going to run more lights. 2x1000w on the same circuit at 240v is a lot safer than 2x1000w @ 120v. The wiring stays cooler and I would just feel a lot more comfortable with it setup that way.OK..I'll split the difference with ya...you made me take my high ass down stairs and check..
here ya go
110 - 9.5 amps
240 - 5 amps
see pic
so you need a fan for a reflector with glass? and why is a relector with glass better?I use sunnlight supply hoods with fans no heat problem here.The cool tubes had fans on them when they smoked bulbs early.I have sungrow and super sun hoods with glass and fans.I just assumed that when you install glass you know you need a fan
so you need a fan for a reflector with glass? and why is a relector with glass better?
do you need fans for the reflector? and thnx for the advice that is what i am going to doI am doing a 1000 watt in a xxxl air cooled hood in a 5 x 5 tent. temps never get above 75. doing 7 agent orange bushes and they look great! week four of flowering starting on this thursday. air cool your hood and run the bigger lights ! You will be pleased
do you need fans for the reflector? and thnx for the advice that is what i am going to do
oooh haha i wasnt payin too much attentionIn his message he answered the very question you then asked him.
He said; "air cool your hood and run the bigger lights ! You will be pleased" and you then asked; "do you need fans for the reflector?"
Do you know of a way to "air cool your hood" (reflector) without "fans?"
Like I previously said; "A reflective hood with glass is basically the same thing as a CoolTube in that the bulb is enclosed and fresh cool air continually passes through the CoolTube/glass enclosed reflective hood taking its heat out and keeping the grow room temperatures lower."