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Philips 315w CDM Elite (CMH)
- Thread starter rives
- Start date
No sound at all from the 315's very low hum from the 630 you have to get close to hear it. They do get hot. You can't keep your hand on 1 for to long..
I gave them what they wanted. Now I will see if they give me what I want
.. The plants on the left are under 1 315 waiting there turn to flower. All the plant in the tent are under the 630.. Lights where raised for pic.. Be careful how close you put it. it can still cause damage if to close.
I gave them what they wanted. Now I will see if they give me what I want
.. The plants on the left are under 1 315 waiting there turn to flower. All the plant in the tent are under the 630.. Lights where raised for pic.. Be careful how close you put it. it can still cause damage if to close. My Dpapillon is completely quiet. The fixture doesn't get hot either. It's warm to touch, but not at all hot.
Here's a picture of my scrog after 11 nights. Three female seeds grapefruits in autopots. The blue line shows where the screen is. I removed most growth under the screen from the right and left plants, but the middle one is still waiting for her turn.
So far the dpap seems like a perfect match for my grow space.
Here's a picture of my scrog after 11 nights. Three female seeds grapefruits in autopots. The blue line shows where the screen is. I removed most growth under the screen from the right and left plants, but the middle one is still waiting for her turn.
So far the dpap seems like a perfect match for my grow space.
Attachments
Here's a picture of my current setup. The flowering plant in the back right is 27 days into 12/12, the rest have been put in the tent at various times, the front center plant went into the tent a couple of days ago.
ps. I can sometimes hear a slight high pitched whining from my d-papillons, it comes and goes.
ps. I can sometimes hear a slight high pitched whining from my d-papillons, it comes and goes.
my wellthink ballasts get hot also - which is surprising, because my original 315w CMH (made by "bolder lite" a company who doesn't want to really market to the cannabis growers) didn't get hot at all - got "warm" but not hot. perhaps more heatsink action in and outside the box than wellthinks? there was no fan or anything remarkably different about it;
ballast was mounted on top of a regular box style hood;
The amount of heat created in the ballast is the difference between actual power consumption & lamp wattage. The ability of the ballast casing to dissipate heat is what determines its temperature. Different designs will balance at a different delta T, being warmer or cooler to the touch, depending.
I'm using 3 diferant vendors. Phantom , Welthink , Sun Systems. All might use Phillips. All get very hot. SS is the coolest but that's because I cant touch the ballast inside. They need to take 25lbs off the SS design. It's a heavy SOB. I'm pretty sure the Phantom and welthink are epoxy encased. I cant see the SS so not sure.
My experience seems to be substantially different than most of you. I used all Philips ballasts, and since they only dissipate 26 watts, I wasn't overly concerned about a really efficient thermal design. I have one mounted in a close-fitting sheet aluminum box, two mounted in the OEM dual-ballast cast-aluminum enclosure, and three mounted inside of an 8"-square gutter along with numerous other components (relays, fuses, etc).
None of them run what I would consider warm - they all are slightly over room temperature.
None of them run what I would consider warm - they all are slightly over room temperature.
I don't think so. They are rated for 120-240v. .You could test it on a 240v line and see.
It would be interesting if a 120v sun system owner would test their system with a kill-a-watt meter or similar so we could see what sort of inefficiency the transformer adds.
My ceramatecs are quite warm to the touch but not hot, not like a person could get burned at all.
Double Kindness
Member
I have the sunsystems and just picked up a new one from the same guy avi got his last 2 from.. rocky mountain grow lights. It looks very different than my ss but I haven't yet set it up yet. Tonight I will.
Not according to their website. They have a 120 volt version, and then they have a 208-240 volt version.
https://www.sunlightsupply.com/shop...system-lec-315-light-emitting-ceramic-fixture
Thanks for that, Avenger. It's important to understand actual power consumption if planning multiple light applications. They're apparently using a pretty beefy step up transformer which is a good thing.
It's interesting how that plays against standard house wiring in comparison to standard HID. A normal 15A circuit will only support one 1000w lamp following the 80% rule but it will support four 315's drawing 360w each. That's basically twice as much light. Anything else would need to be on a different circuit. Stepping up to a 20A breaker will run five 315's w/ 160w of headroom for other stuff but it won't run two 1000w lamps following the 80% rule. Four 315's on a 20A circuit + fans & pumps would be well within safe limits, for example.
It means a lot of growers can avoid additional wiring to get what they want using 315's. It also means they can use a variety of un-fused lighting controllers safely because the breaker matches the cords to the equipment.
It's interesting how that plays against standard house wiring in comparison to standard HID. A normal 15A circuit will only support one 1000w lamp following the 80% rule but it will support four 315's drawing 360w each. That's basically twice as much light. Anything else would need to be on a different circuit. Stepping up to a 20A breaker will run five 315's w/ 160w of headroom for other stuff but it won't run two 1000w lamps following the 80% rule. Four 315's on a 20A circuit + fans & pumps would be well within safe limits, for example.
It means a lot of growers can avoid additional wiring to get what they want using 315's. It also means they can use a variety of un-fused lighting controllers safely because the breaker matches the cords to the equipment.
LastHurrah
Member
I've been meaning to ask how folks are switching multiple 315's. What sort of "off the shelf" controllers are y'all using? I was thinking of something from Sentinel, since I've got their CHHC environmental controller on order.
LH
