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Old 02-20-2016, 08:14 PM   #15
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Very professional looking. I'm sure you've told us before, but what's the Progressive Industries box?

It is the remote display for my hardwired Energy Management System (EMS) surge protector that monitors the incoming AC power when plugged in to external power. Several other forum members have installed this same unit.
http://www.progressiveindustries.net/#!ems-hw30c/cuun


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Old 02-20-2016, 08:36 PM   #16
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Originally Posted by Boxster1971 View Post
It is the remote display for my hardwired Energy Management System (EMS) surge protector that monitors the incoming AC power when plugged in to external power. Several other forum members have installed this same unit.
http://www.progressiveindustries.net/#!ems-hw30c/cuun
I've always heard that a surge protector was sacrificial and protected against one surge before needing to be replaced or refurbished. Which is one reason I've always resisted going with a hardwired system.
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Old 02-20-2016, 08:44 PM   #17
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Originally Posted by Boxster1971 View Post
It is the remote display for my hardwired Energy Management System (EMS) surge protector that monitors the incoming AC power when plugged in to external power. Several other forum members have installed this same unit.
http://www.progressiveindustries.net/#!ems-hw30c/cuun


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Thank you Mike!


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Old 02-21-2016, 07:52 AM   #18
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Go with the Blue Sky 2512iX-HV solar charge controller and use their iPN-PRO remote, which is also a full function battery monitor. You will need space for only 1 monitor panel that is about 4 x 4".

I use these components in every Interstate solar upgrade that I do.
Lew,
Size looks great, would fit great even with my smaller control panel, just some warning signals in the Blue Sky literature -
1. ) Do not connect to a PV array capable of producing greater than 20 amperes of short circuit current @ STC.
2.) Solar BoostTM 2512i-HV and 2512iX-HV are improved versions of the original SB2512i and SB2512iX 12 volt 25 amp Maximum Power Point Tracking (MPPT) photovoltaic (PV) battery charge controllers. The new HV versions retain their original 25 amp 340 watt rating when used with conventional 12 volt 36 cell PV modules, but are also able to operate up to 270 watts of higher voltage 60 cell “grid tie” type modules.

I have 400W and Isc for 4 panels = 24.4A
I just don't understand how they market a 25A controller and then limit it to 20A?
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Old 02-21-2016, 09:26 AM   #19
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Lew will likely chime in. The 20A limit is for 60 cell PV panels. The normal 36 cell panels used on most RVs is 25A. Also the Blue Sky unit has a built in current limiter as described a few pages further in their manual. Copy attached.
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Old 02-21-2016, 10:01 AM   #20
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To LB_3... No pics yet. Just figuring out where to put things. Probably will not do the work until March-late....if the Tn rainy season permits.


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Old 02-21-2016, 10:12 AM   #21
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Lew will likely chime in. The 20A limit is for 60 cell PV panels. The normal 36 cell panels used on most RVs is 25A. Also the Blue Sky unit has a built in current limiter as described a few pages further in their manual. Copy attached.
Attachment 257622


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Mike hit the nail on the head!!

I use the 2512iX-HV up to and including 400 watt arrays. Never a problem!!

Anything larger gets the 3024iL, or multiples of same, depending on the array size:
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Old 02-21-2016, 11:31 AM   #22
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Originally Posted by Boxster1971 View Post
Lew will likely chime in. The 20A limit is for 60 cell PV panels. The normal 36 cell panels used on most RVs is 25A. Also the Blue Sky unit has a built in current limiter as described a few pages further in their manual. Copy attached.
Attachment 257622


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The very next page in the manual has a table that says otherwise. I couldn't figure out how to cut and paste, using my wife's Mac. I have time to research this and call Blue Sky before making a final decision. The fact that Lew has installed a lot of these with no problems indicates that probably I just don't understand the process used for rating. On the other hand, I might not want to buy a controller that clips off available power even it only happens at noon on a cool sunny day.

John
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Old 02-21-2016, 11:59 AM   #23
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I remember a few of you folks moved the TV antenna to the top of the AC (reinforced lid). Anyone have anything to report on how that worked out for them?
I took the first step yesterday and removed the antenna. Next will be mounting it on the AC lid. Made one mistake - I cut the short coax cable that connects internally to the antenna. I thought Airstream had attached it inside the roof but actually the connection between the antenna coax and the chassis run coax was just caught on something. Now I need to find someone with the right coax crimping tools to get the two pieces of cable back together. The antenna coax cable diameter is very small. Much smaller than the cable coming out from the roof, which is regular cable TV coax.

The second PIC is my temporary cover to stop water intrusion.
Sorry about the upside down pic.

John
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Old 02-21-2016, 12:03 PM   #24
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If you're worried about dropping any additional power from your array, simply use the 3024iL charge controller.

I finds them easier to install anyway. 😃


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Old 02-21-2016, 10:30 PM   #25
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The very next page in the manual has a table that says otherwise. I couldn't figure out how to cut and paste, using my wife's Mac. I have time to research this and call Blue Sky before making a final decision. The fact that Lew has installed a lot of these with no problems indicates that probably I just don't understand the process used for rating. On the other hand, I might not want to buy a controller that clips off available power even it only happens at noon on a cool sunny day.



John

??? That table on page 6 of my manual says current limit is 25A for 36 cell panels as I said earlier. Are you focusing on the 370 watt limit? This Blue Sky controller can handle 400 watts with no problems. I've had mine in service for several years now. The 400 watt rating of my four 100 watt GS-100 panels from AM Solar will never give me the full 400 watts mounted flat on the roof of my van. That 400 watt rating is under ideal sun conditions which I'll never see.


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Old 02-22-2016, 07:29 AM   #26
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??? That table on page 6 of my manual says current limit is 25A for 36 cell panels as I said earlier. Are you focusing on the 370 watt limit? This Blue Sky controller can handle 400 watts with no problems. I've had mine in service for several years now. The 400 watt rating of my four 100 watt GS-100 panels from AM Solar will never give me the full 400 watts mounted flat on the roof of my van. That 400 watt rating is under ideal sun conditions which I'll never see.


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Don't feel bad Mike, no one else will ever see that number either. They are all rated at STC (Standard Test Conditions) which was an agreed upon lab standard for uniform ratings of solar modules to allow for accurate comparison. In actual real world conditions, or NOTC (Normal Operating Cell Temperatures), the STC figure is never attained.

Here's a good discussion of the 2 and their differences: http://www.amsolar.com/home/amr/page_164
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Old 02-22-2016, 11:51 AM   #27
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Thanks Lew - good article.


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