What else is wired directly to the battery - SailNet Community
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post #1 of 40 Old 4 Weeks Ago Thread Starter
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What else is wired directly to the battery

Things conventionally wired directly* to the battery:

- bilge pump
- gasoline/propane detector
- what else?

* wired directly: wiring goes directly to the battery, not through a breaker/fuse panel. There might be a fuse between the device and the battery, as specified by the device manufacturer.

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Re: What else is wired directly to the battery

Hey,

I have the bilge pump wired directly to the battery. My propane detector is not, that's on a panel switch.

I also have a wire from the stereo directly to the battery. This is to keep the clock and other settings alive when the battery switch is off.

Lastly the output from the solar charge controller is connected to the house battery bank (2 6V).

Barry
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Re: What else is wired directly to the battery

Any voltage sense wires, or charge source power output if not separate.

Every connection in between gives a little voltage drop.

Temp sensors can go on the body, doesn"t need to be the post.
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Re: What else is wired directly to the battery

I have nothing wired directly to the battery. Every thing is after the main battery switch. When I do electrical work, I want to know that off is off. I'll leave the main switch on if I want the solar charger and whatnot on.
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Re: What else is wired directly to the battery

Two banks... house and start aside from the main heavy wires....

start has:
echo charge connected to house

house has:
bilge pump under PSS dripless shaft
one always-ON 12v outlet for charging something when I am not aboard... such as VHF radio also for clock /memory of stereo
temp sensor for alternator regulator
link 20 sense wire
echo charge connected to start bank

I have something called a Pulse (de-sulfator) which is connects the house to the start. I don't think it does anything. I think I will remove it.

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Re: What else is wired directly to the battery

The only things connected to my house bank are the panel takeoffs, charger cables, smartgauge and the temp sensor.

You may note that I donít even have the bilge pump directly connected, they (3) run through a breaker on the panel. Itís the OEM setup and Iíve questioned whether I want to change it for safety. Not sure new breakers are quite as vulnerable as old time fuses and whether that should change perspective. I do like being able to shut the pumps off, when I want to clean filters, replace float switches, etc. Iím on the fence on this one.


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Re: What else is wired directly to the battery

2 banks on my boat both have 175AMP MRBF. MOST of my connections are made at the back of the 1/both/2/off switch

Start bank - connected to the SmartGauge and 1/both/2/off switch. Echo Charge, analog volt meter, and bilge pump are connected to post 1 of the 1/both/2/off switch.

House bank - connected directly to the Alternator, a SmartGauge, a BlueTooth battery monitor, and 1/both/2/off switch. Echo Charge, analog volt meter, and stereo memory are connected to post 2 of the 1/both/2/off switch.

Because my boat lives on a mooring I have connected the battery charger (Iota DLS30/IQ4) to the Common post of the 1/both/2/off switch. I discovered that the battery charger has a high drain (like 0.10A) on the battery if it is not providing charging.


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Re: What else is wired directly to the battery

It depends on the boat.

I owned a 1979 Oday 23. The breaker panel consisted of four circuit breaker switches, one of which was a "spare". While the other switches worked (interior and exterior lights), the spare was so corroded that it was useless. I wanted to install a chartplotter, and rather than take on the replacement/refurbishment of the panel, I simply hardwired the plotter to the battery (with a fuse). My point being, it may not be worth it to wire something through the panel even if you "should" do it that way. It depends on the boat.
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Re: What else is wired directly to the battery

Quote:
Originally Posted by Degas View Post
Things conventionally wired directly* to the battery:

- bilge pump
- gasoline/propane detector
- what else?

* wired directly: wiring goes directly to the battery, not through a breaker/fuse panel. There might be a fuse between the device and the battery, as specified by the device manufacturer.
Just Bilge pumps for me. My pump panel is within 2' of the Battery and the nice on/off/auto panel. I did rig a guard to prevent accidentally turning them OFF because they are at my feet sitting at the chart table. Did that once and it shook me up pretty good. What's the point of bilge pumps it they're off.
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Re: What else is wired directly to the battery

I ALWAYS wire the bilge pumps (more than one), propane detectors, and VHF directly to the battery (fused). All wired for 3% or less voltage drop. You always want the bilge pumps to work and in case of emergencies you want to be able to use the VHF to call for help!
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