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dedmiston's avatar
dedmiston
Moderator
Sep 10, 2017

Kill power to Magnum remote?

Hi Friends,

I love my Magnum inverter. The converter/charger is far superior to our OEM and the inverter has served us perfectly. My only issue is that our installer didn't wire it to the battery cutoff switch, so the Remote panel creates a phantom draw in storage. The user's guide reads like The Handbook For The Recently Deceased from Beetlejuice, so I haven't found my answer in the docs.

Does anyone know of a way to cut power to the remote panel? Is there an on/off function?
  • CA_Traveler's avatar
    CA_Traveler
    Explorer III
    Sep 10, 2017
    dougrainer wrote:
    1. UNLESS your Inverter draws less than 100 amps DC current in Invert operation, you NEVER install a battery disconnect on the Feed Positive cable to the Inverter
    Why? Is their a concern about the switch mV drop?
    2. You can install a 200 amp rated Disconnect switch if you have the smaller 1000 to 1500 Watt Magnum Inverters.
    3. A quick way to disconnect the remote is either go to the Inverter and disconnect the Phone Type remote cable, takes 5 seconds. OR pull the remote panel and disconnect the same cable. Takes 3 or 4 minutes.
    What is the inverter draw vs the remote only draw?

    If I was going to start disconnecting the cable I'd install some additional cables and a FF connector at a convenient point for disconnection.
    4. Disconnect the Negative cable at your House Batteries when storing. This is the BEST solution as most OEM's also route the LP/CO detector direct to the batteries and are not turned OFF when the battery disconnect is used. Plus the negative post/wire is always the best considering safety.Doug
  • dougrainer's avatar
    dougrainer
    Nomad
    Sep 10, 2017
    1. UNLESS your Inverter draws less than 100 amps DC current in Invert operation, you NEVER install a battery disconnect on the Feed Positive cable to the Inverter
    2. You can install a 200 amp rated Disconnect switch if you have the smaller 1000 to 1500 Watt Magnum Inverters.
    3. A quick way to disconnect the remote is either go to the Inverter and disconnect the Phone Type remote cable, takes 5 seconds. OR pull the remote panel and disconnect the same cable. Takes 3 or 4 minutes.
    4. Disconnect the Negative cable at your House Batteries when storing. This is the BEST solution as most OEM's also route the LP/CO detector direct to the batteries and are not turned OFF when the battery disconnect is used. Doug
  • CA_Traveler's avatar
    CA_Traveler
    Explorer III
    Sep 10, 2017
    One of the short comings of the Magnum units is that they cannot be turned off. Mine draws about 0.5A which from an storage or dry camping perspective is excessive.

    With the high amp draw inverter capability I would not install the above linked cutoff battery switch. I installed a 300A $23 Blue Seas switch on my battery post. For flooded batteries the switch should be mounted away from battery fumes.


    Click For Full-Size Image.
  • shastagary's avatar
    shastagary
    Explorer
    Sep 10, 2017
    article says
    A 12-volt disconnect switch was added to the inverter to disconnect power to the inverter during storage or when servicing the unit.
    Magnum inverter install or add this at the battery Battery Master Disconnect Switch your current battery cutoff switch may not be able to handle the current of the inverter. on another forum i read this
    power draw wrote:
    The measured Magnum inverter power draw when it is "OFF" is 400mA (to keep the remote panel alive)
  • 2oldman's avatar
    2oldman
    Explorer II
    Sep 10, 2017
    I would think disconnecting a battery cable should handle it.

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