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Plug in power meter

Discussion in 'Lighting' started by reggie1387, Aug 9, 2019.

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  1. #1 reggie1387, Aug 9, 2019
    hey all I recently brought a plug in power meter to check out my qb grow light (3x 288qb HLG-320H-C2100B) I wanted to work out how many watts my light is. Im no electrician (obviously) but I’m guessing I can’t. The following readings in pics bellow. Are all readings ok?
    7F92E771-6050-407B-B50E-08E0F2BB86B6.png EB9B5C3E-F9BA-43E0-B90F-A297E32A8A0D.jpeg C9FE7F72-E0AE-421B-862E-BB3F5E8AF94F.jpeg BB172649-4579-44CA-9CB8-6F971D58C37B.jpeg 7CAA9917-208E-4A0F-A33F-D3B0D3E9B71E.jpeg 10E9ABE2-6E31-4C6E-BAC7-FBC1DF174D36.jpeg

    Cause I seen watts is 49.2 I thought it would be more? The lights are dimmed currently and only using 60,000 lux (I know). When I cranked my light all the way up this is the readings
    D8A85315-C6D8-4123-8DA3-28ABAA6E182C.jpeg 6BEC5FC1-D35B-4502-B42E-2B67159FBACE.jpeg
     
  2. #2 JoshuaE, Aug 9, 2019
    Crank them wide open and check . its possible to dim to 49 watts so that could be correct
     
  3. #3 reggie1387, Aug 9, 2019

    Cranked wide open is only 112.9W is that right?
     
  4. #4 JoshuaE, Aug 9, 2019
    Are you 240v or 120v.
    Sounds like you got 240v if you want the lights output you can get a dc meter for this, it goes in between the driver and the light
     
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  5. #5 reggie1387, Aug 9, 2019
    240v in Australia.

    Something like this?
    855AC729-4403-4154-96C0-5F257A2F3C47.png 42145A3D-42F6-40AB-BDD3-B8907490402D.png
     
  6. #6 JoshuaE, Aug 9, 2019
  7. #7 reggie1387, Aug 9, 2019
  8. #8 reggie1387, Aug 9, 2019
    So I’m not the best artist lol but I think you can still work it out. The wires are in a group of joiners in the junction box.
    706D8632-A737-4FA0-8F0D-3E166FBCDDD4.jpeg


    I’m not sure if his wired right? All I now is it turned on and was bright as hell. I do want to re wire it when I get my 4th board and extra driver.
     
  9. #9 Budmiser, Aug 9, 2019
    The absolute EASIEST way to know exactly what your lights are pulling at a glance...
    Install a little DC power meter like this one on Amazon...Wire it inline between the driver and the load...
    It displays everything at once....volts,amps ,and watts...and power usage.
    I keep one on each power supply that I have ...www.amazon.com/bayite-6-5-100V-Voltmeter-Multimeter-Amperage/dp/B013PKYAV6/ref=sr_1_3?crid=2GMK4XMN2VRPP&keywords=drok+dc+ammeter&qid=1565361953&s=gateway&sprefix=Drok+%2Caps%2C160&sr=8-3
    DSCN0165.JPG
     
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  10. #10 reggie1387, Aug 9, 2019


    Cheers mate I just brought this one. Should make things a lot easier
    51574EBD-5B98-43E1-A560-26B6745E2F48.png
     
    • Like Like x 1
  11. #11 reggie1387, Aug 9, 2019
    I see that yours is DC 6.5/100V 0-20A and mine is 60V 100A will that matter? @Budmiser
     
  12. #12 Budmiser, Aug 9, 2019
    Um...That one only handles up to 60 volts ? You driver can put out up to 150 volts,doesn't it ?
     
  13. #13 reggie1387, Aug 9, 2019
    C4097594-97B1-4588-A59C-B83F0D2DBA9F.png
     
  14. #14 Budmiser, Aug 9, 2019
    Just realized my mistake....you need a different model,for higher voltages than mine...I'm running some 24 volt boards and some 36 volt boards on my rig...
     
  15. #15 JoshuaE, Aug 9, 2019
    That's a parallel circuit in your drawing but your driver is a constant current driver which is for series wiring. You are not getting even close to the performance that setup is capable of.
     
  16. #16 reggie1387, Aug 9, 2019

    I didn’t think it was right. So I need to re wire them like this?
    58F3BBDF-BBA7-4162-9ED2-25815D594BA5.jpeg
     
  17. #17 JoshuaE, Aug 9, 2019
    I ve got to go out but I can help you straighten that out later if you need.
    Yours should be like this with your 3rd board in the middle Screenshot_20190809-112702_Chrome.jpg
     
  18. #18 JoshuaE, Aug 9, 2019
    I ve got to go out but I can help you straighten that out later if you need.
    Yours should be like this with your 3rd board in the middle View attachment 2659479
     
  19. #19 JoshuaE, Aug 9, 2019
    Yes sir that's right you are gonna be surprised you might find you don't need a 4th board
     
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  20. #20 JoshuaE, Aug 9, 2019
    Also when your boards are in series you will want a meter that can handle 200v DC
     
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