[RE-wrenches] Enphase and Line Noise

[SunHarvest]

Thanks William,

I completely agree about PV dedicated power centers & connections. I talked with the homeowner about having the Envoy located in the detached garage several hundred feet away from the house where the solar is mounted and tied into a dedicated sub but he insisted the Envoy be located in the house. I'll give the Digi-Key filter a try. Thank you!

SunHarvest
  ----- Original Message ----- 
  From: William Miller 
  To: 'RE-wrenches' 
  Sent: Wednesday, October 16, 2013 5:52 PM
  Subject: Re: [RE-wrenches] Enphase and Line Noise


  Hey Eric, Wrenches:

   

  The first thing that jumps out at me is the timer in the neutral.  That is messed up.  You should never switch the neutral.

   

  I have had some difficult Enphase interference problems.  I was told this and did not believe at first, but always, always, bring your Enphase feeds into a separate sub-panel.  In that sub-panel install the breaker feeding the receptacle for the Envoy.  This way you can filter the feeder to that sub-panel and it is isolated from the entirety of the remaining electrical system.  

   

  I tried the toroidal filters but they did not work  Nick Soleil recommended an in-line filter from Digi-key that did the trick.  Here is the link:

   

  http://www.digikey.com/product-search/en?vendor=0&keywords=FN+2450G-20-61

   

  Good luck.

   

  William

   

  From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of SunHarvest
  Sent: Wednesday, October 16, 2013 3:34 PM
  To: RE-wrenches
  Subject: Re: [RE-wrenches] Enphase and Line Noise

   

  I really like using Enphase but my most recent customer just informed me that his pool lighting is now turning on and off intermittently after the PV install completion. The lights are controlled via a timer on the neutral line. I'm pretty green when it comes to controls so I don't have a solution yet. Just thought I'd add my experience in response to your query. Look forward to what others have to say about this...

   

  Eric

   

  ----- Original Message ----- 

    From: markf at berkeleysolar.com 

    To: re-wrenches at lists.re-wrenches.org 

    Sent: Wednesday, October 16, 2013 1:01 PM

    Subject: [RE-wrenches] Enphase and Line Noise

     

    Guys,

    I am thinking of getting back into using Enphase, but I am worried about
    sites with high line noise block communication with the microinverters.

    I have run into homes with light control systems and VFD pumps.

    I am wonder what folks have experienced:

    1 - How often do you encounter this problem?
    2 - What are other causes of noise that impacted the site?
    3 - How did you address, with a line filter?
    4 - How did you handle the added cost, passed it on or eat it?

    Thanks,

    Mark Frye
    Berkeley Solar Electric Systems

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