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Old 11-28-2017, 10:45 AM   #1
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Newmar Owners Club
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Location: Florida City, FL
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Question 2015 Ventana LE 3850 Wiring Diag.

I am installing a solar system, upgrading batteries to AGM and installing a new inverter/charger .... now with that said - my existing inverter only powers the outlets in the forward and rear entertainment compartments. I have enough battery, solar and inverting power to run all the outlets, microwave and fridge .... my only problem is locating a wiring diagram so I can rewire/reroute the panel. Newmar C/S said they have no such diagram. Can anyone help me ??? Thanks in advance!

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Old 11-28-2017, 02:40 PM   #2
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Not sure about your coach but it's been my experience that many MH's have a split bus bar in the electrical circuit breaker box. In other words, a portion of the bus bar draws it's electricity from the inverter and only supplies certain circuits with power. When you plug in to shore power or use the generator, a gate trips within the inverter and allows shore power to travel to both sides of the "hot" bus bar. Take apart your panel and look for a split in the bus bar, if you find it, you could take a piece of 6 gauge wire and jump the bus bar thus allowing inverter power to travel to those circuity not previously energized by the inverter. When you plug into shore power it will automatically supply shore power to both bus bars and when you're on inverter power it will supply all the circuits. The only draw back is the A/C in that it will try to draw power from the inverter when you're not connected to shore power. To eliminate that possibility just make sure the A/C's are turned off when on inverter power.

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Old 11-28-2017, 03:37 PM   #3
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Newmar will have what you want but you'll need to ask the question correctly and simply. Don't try and explain what you want to do just ask for a PDF of the AC and DC lay out or a distribution diagram. Even though you don't need the DC side always good to have. Have your coach VIN or the Newmar serial number handy so they know which diagram to send you based on options Newmar installed.

Thor still had what I needed for my 11 year bargain basement coach. Just need to know how to ask in such a way as they understand what you need. Sometimes details can hurt more than help. Even the simple layout diagram gave me what I needed to power the two circuits I wanted when I added an inverter to the coach.
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Old 11-28-2017, 03:48 PM   #4
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Originally Posted by EdCarp View Post
Newmar C/S said they have no such diagram. Can anyone help me ??? Thanks in advance!
Actually they are more artful with their words in my experience. I have asked customer service on several occasions for the schematic wiring diagrams for my coach. What they say is that the "information is not available to me".
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