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Old 01-07-2016, 03:53 PM   #239
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Originally Posted by KJRitchie View Post
When the solar panels on the roof are actively charging the batteries while towing does the charge circuit from the tow vehicle interfere with the solar? It would be nice to have both so when towing at night you still get some charging.

Thanks.

Kelvin
I just put an on/off switch on my line. So I can use it when I want. My truck sends a steady 7 amps back. You can easily measure yours to determine how much power is sent. And turn it on/off when you want so you don't fry the batteries.

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Would the Blue Sky Solar Boost 3000i be a better solution for me. It seems to have more monitor functions than the IPN remote.

Kelvin
No, the IPN Remote has more functions, as it's a remote display.


----

So many folks going against the grain lately, using other panels and batteries. Not buying all the marketing hype huh?
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Old 01-07-2016, 03:58 PM   #240
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The 3000i might also be suitable, but in either case if you want to monitor your AS battery and know the state of your battery (percent battery depletion for example), you'll still need the IPN Remote Pro and shunt. The 3000i can tell you how many Amp-Hours was produced by the solar controller but it's doesn't know what other loads are on your batteries so it can't tell you the depletion level. The only way to know this reliably is to measure the current coming out of the batteries.
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Old 01-07-2016, 10:51 PM   #241
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OK, I see there are two IPN remotes; the standard and pro. I was looking at the standard model. The combination of the the 3024IL controller and IPN Remote Pro and temperature sensor is almost $700. Not sure it's worth it for just 200w to 400w.

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Old 01-07-2016, 11:00 PM   #242
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The IPN Remote Pro integrates well with the Blue Sky controllers. Perhaps the Trimetric is less expensive, but you don't get the nice integration and the single head. Some people get by without the battery monitor but I wouldn't recommend it.
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Old 01-07-2016, 11:43 PM   #243
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I like the features of the IPN Remote Blue Sky has a cheaper MPPT controller. The 2512IX is about $150 cheaper than the 3024. With 4 100w panels they should only output 22 amps on the best day. Would this work? I doubt I can put more than 2 panels on my roof; 2 Fantstic fans, 2 skylights, 1 AC and 1 Wingard TV antenna take up all the space.

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Old 01-08-2016, 12:33 AM   #244
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You'll exceed the rating on the 2512 so I would go with the SB3000 of you're planning on a 400 W system.
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Old 01-08-2016, 09:19 AM   #245
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Trimetric has now a 30amp controller, SC-2030 that can be used in conjunction with their 2030 monitor. The model is SC-2030 and is a PWM type controller that when used with the 2030 monitor can be programmed to match battery manufacturers charging requirements. With the Trimetric, shunt, temperature sensor and SC-2030 the cost is about $315 looking at Best Converters website. I think with my configuration of 200w of roof solar and a 200w portable panel this system may be the most cost effective and useable for me. Will continue research.

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Old 01-08-2016, 10:34 AM   #246
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Getting creative with positioning and orientation, we were able to put five 100 watt GS-100 panels on the roof of a 23D, which is a narrow body trailer. Its also has the air conditioner, two ceiling fans and a skylight down the middle.

We will have nine of the same panels on the 31' Classic roof.

If installing both ground and trailer solar panels, both sets will need a disconnect switch so no connections are made with the possibility of the current flowing. Both switches should be off when connecting and disconnection to prevent any issues inside the solar charge controller.

Buying undersized now will only cost more later if wire sizes need to be increased or a larger capacity controller is needed.
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Old 01-08-2016, 11:27 AM   #247
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Trimetric has now a 30amp controller, SC-2030 that can be used in conjunction with their 2030 monitor. The model is SC-2030 and is a PWM type controller that when used with the 2030 monitor can be programmed to match battery manufacturers charging requirements. With the Trimetric, shunt, temperature sensor and SC-2030 the cost is about $315 looking at Best Converters website. I think with my configuration of 200w of roof solar and a 200w portable panel this system may be the most cost effective and useable for me. Will continue research.

Kelvin
This looks like a solid PWM system. You'll need to be aware that all the panels must be connected in parallel and all must be 36 cell (12 V) panels. Putting two panels in parallel on the roof and using the existing pre-wiring will be fine, however in the future if you choose to put all four panels on the roof and in parallel, you might need to run heavier gauge wire from the combiner box down to your solar controller. Otherwise the price is very good.
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Old 01-08-2016, 01:04 PM   #248
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You'll exceed the rating on the 2512 so I would go with the SB3000 of you're planning on a 400 W system.
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Originally Posted by KJRitchie View Post
I like the features of the IPN Remote Blue Sky has a cheaper MPPT controller. The 2512IX is about $150 cheaper than the 3024. With 4 100w panels they should only output 22 amps on the best day. Would this work? I doubt I can put more than 2 panels on my roof; 2 Fantstic fans, 2 skylights, 1 AC and 1 Wingard TV antenna take up all the space.

Kelvin
Gotta disagree Alano, that's the same one that came with my 400 watt kit from AMSolar and it worked fine I'd hit the max output of 25 amps all summer long. Worked great. And I'm still using it, slaved to the 3024IL for ground deploy.
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Old 01-08-2016, 02:09 PM   #249
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That's interesting Bold. The datasheet calls out for a recommended maximum of 340 W of solar. I guess if the panels happen to deliver 400 W on a cold day when the battery charge voltage is 13 V, the controller will find an operating point to max out the current to 25 A, even though a slightly larger controller could perhaps do a tad bit better. For example, let's say we actually generate 400 W, then at 13 V, assuming 96% efficiency, we should expect (400 W / 13 V) * 0.96 = 29.5 A into the batteries during charge.

I think the point is moot though since Kelvin is finding the Trimetric solar controller/monitor a much better value.
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Old 01-10-2016, 02:24 PM   #250
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Just wondering when you have roof solar and are connected to shore power do you disconnect the solar using an on off switch? If so, is the switch on the input or output side of the controller?

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Old 01-10-2016, 02:29 PM   #251
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Just wondering when you have roof solar and are connected to shore power do you disconnect the solar using an on off switch? If so, is the switch on the input or output side of the controller?

Kelvin
Mine is always on. It knows when the battery is full and stops charging. Same with the converter.
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Old 01-10-2016, 03:42 PM   #252
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If you have roof solar, the solar charger is typically connected directly to the batteries. The positive connection is typically fused. It's recommended on solar installs to insert an on/off switch between the panels and the solar charger. This allows you to safely disconnect the panels from the solar charger is you ever need to do maintenance on the solar charger itself. For the on/off switch I use a rotary 50 A switch that you can commonly obtain from any autoparts store.

When connected to shore power, I typically disconnect my batteries from the trailer by selecting the Store position for the Use/Store switch. This disconnects the crude one-stage converter.
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