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Old 02-09-2019, 08:05 AM   #169
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While I agree that magnum is stale and lacks many of the modern features and some common sense ones, I dont think I would be happy with the alternatives.

Magnum does a good job when it comes to their communication bus, and progressive had done an even better job of leveraging this to enhance their EMS system. The inverter assist is an amazing feature that was discovered by progressive and later added to the marketing material by magnum. The open and documented nature of the magnum system is hard to replace, and especially not with xantrex.

I have had magnum inverter chargers for 14 years, and dont claim to know even 1/2 of everything, but I have had great experience with their product.
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Old 02-09-2019, 04:41 PM   #170
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All I've learned from this thread is I want to yank everything magnum out and put something else in Okay, kidding, but I think Magnum is the same trend as everything else, poor cheap choice by Newmar. If my inverter dies it will not be replaced with a Magnum Energy one.

Thanks Rich, I was looking for that document, I thought I had an Excel spreadsheet version from Dr. Martin but I can't find it.

Great information shared here, sometimes it takes a few back and forth iterations to figure out what's going on, the AGM issue is eye opening. I'd probably go with Charlie's CV/CC setup which he uses even on FLA's. I'm just using the FLA setting and everything else that seems to work fine for me with FLA batteries, I like mine staying at 100% SOC on shore power.

Solar has been a huge learning tool, really glad I went ahead and did that if only just to get a much better understanding of the electrical system in the coach. Now for some boondocking!
Hi

What inverter would you install? I think the high line coachís have the Xantrex?
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Old 02-09-2019, 07:48 PM   #171
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Personally, I like the Magnum products. I've had a Magnum inverter in the last three coaches for 15 years and never an issue. Keep in mind that no item is perfect and is made for the general RVing public. VERY FEW people actually dig down this deep into their inverters and settings and get along well with how they perform everyday operations. I'll venture to bet that 90% of the people that buy a new coach have zero knowledge about their Magnum inverter/charger beyond turning the inverter on and off.
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Old 02-09-2019, 08:00 PM   #172
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Glad to hear Magnum has worked well. I've just been impressed with Victron Energy equipment with my solar experience. They update frequently and seem to keep on the cutting edge of technology.
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Old 04-17-2019, 02:15 PM   #173
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Thank you to all who have provided information on the install of the BMK and programming of the ME-ARC. I finished the install and programming over the weekend. The coach is now back at the storage lot, so I have not had a chance to test it out the new setup.
I talked to Glenn at Magnum about my solar and the proper setting for the "Final Charge Stage". He recommended setting to"Float".
I had an odd thing happen when I was disconnecting the positive cables that scared the bejesus out of me. I disconnected all of the positive cables (before the negative cables of course) and set them aside for installation on the same positive terminal later. The positive cable that goes to the Bi-Directional Isolator had power and sparked like crazy when it hit the frame. I was surprised to see that it was hot. It must be connected to the chassis battery bank. Nothing burned and no blown fuses. Everything seems OK, but does that seem right? I thought the BIRD only kicked in under certain lower battery conditions when the two battery banks either are charging or the switch on the dash is pushed to mate the house and battery banks. All batteries were fully charged.
Any insight would be well appreciated.
Thanks in advance.
Cheers,
Mike.
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Old 04-17-2019, 10:31 PM   #174
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Ok Not sure, but think the Ventana 3407 we are getting (all electric coach) has the 2800 watt magnum inverter, and the stock control panel is the RC50. Did you have to run a new cable to the inverter, or was it just a swap the RC for the ARC, one for the other? Where did you get yours, AMZN wants 209. Suggestions please.
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Old 04-18-2019, 05:55 AM   #175
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The ARC is just a swapout. Unplug network cable from RC...plug cable into ARC. I powered everything down before swapping control heads...then repowered.
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Old 04-18-2019, 07:45 PM   #176
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The ARC is just a swapout. Unplug network cable from RC...plug cable into ARC. I powered everything down before swapping control heads...then repowered.


No need to transfer settings? All carry over to new panel?
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Old 04-18-2019, 08:25 PM   #177
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No.....the settings are held in the panel. You'll have to reprogram the ARC.
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Old 04-18-2019, 09:24 PM   #178
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I disconnected all of the positive cables (before the negative cables of course) and set them aside for installation on the same positive terminal later. The positive cable that goes to the Bi-Directional Isolator had power and sparked like crazy when it hit the frame. I was surprised to see that it was hot.
ALWAYS disconnect the negative (ground) cables to the chassis first then disconnect the positive cables before doing any such electrical work. Then reverse the order when reconnecting!
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Old 04-18-2019, 10:07 PM   #179
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ALWAYS disconnect the negative (ground) cables to the chassis first then disconnect the positive cables before doing any such electrical work. Then reverse the order when reconnecting!
This is wrong for those with Magnum inverters. You will destroy your inverters accessories if you leave the positive connected without a battery ground.

With magnum you *must always* disconnect the positive cable first, and then the ground.
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Old 04-18-2019, 11:33 PM   #180
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Disconnect the one positive inverter/charger cable and tape end over, THEN remove negetive cables as normal practice.
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Old 04-19-2019, 05:35 AM   #181
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Caution?
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Old 04-19-2019, 07:51 AM   #182
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Thank you Twinboat.
I'll be sure to wrap the positive cable ends before I do anything else again.
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