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Old 03-09-2014, 10:15 PM   #1
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Battery Disconnect

I'm wondering about the distribution route of the 12VDC. Does DC power from the converter route up to the battery disconnect switch first, then back to the fused distribution center ?

In my old TT, I did not have a disconnect switch so I'm unfamiliar with the layout.

Yesterday , while working up front installing the new inverted in the new FW, I turned off the battery switch, and all DC devices in the FW shut down, even though I still had shore power.

Three wires in, so I'm guessing battery, converter, feed to DC load.

Kinda of a DC Master kill switch?
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Old 03-10-2014, 08:25 AM   #2
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It's my understanding that all 12 volt power comes from the batteries. The batteries act as a buffer. The invertor keeps batteries charged. If you use a battery disconnect or physically unhook the batteries, you have broken the curcuit. Therefore no 12 volt power.
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Old 03-10-2014, 09:34 AM   #3
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Quote:
Originally Posted by Ela1948 View Post
It's my understanding that all 12 volt power comes from the batteries. The batteries act as a buffer. The invertor keeps batteries charged. If you use a battery disconnect or physically unhook the batteries, you have broken the curcuit. Therefore no 12 volt power.
True only if your disconnect breaks the negative or ground side of the connection. If you are only taking out the positive side then the converter would still power the 12V systems. This is the first unit I have with a kill switch and I have yet to confirm which side of the battery it is on. My previous unit only had a 30A fuse on the positive and just pulling this with shore power would not disable the 12V system. Also if your power panel is grounded to the frame through any other 12V device in the circuit you could experience and shock.

If you are going to pull the panel, please don't do it while connected to shore power. 120V is still going through that panel! You should be disconnected from all power.
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Old 03-10-2014, 12:51 PM   #4
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It also makes it tough when they use House-hold color codes, where Black is Hot and White is Ground

Conversely, in the DC world, Black is Negative/ground and Red it Positive.
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