Second Bilge Pump

[HangOutdoors]

Tonight I mounted the Second bilge pump, an Attwood Saraha 750. I mounted it below the waterbox under the hatch on a 3/4" piece of starboard across the keel channel with some 4200. I relocated my High water alarm to inside the back engine compartment right where the hole is to go back to the rear bilge. It is higher than the rear bilge but at about the same level as the Stock bilge. Anyhow... I am debating on which way I want to wire and looking for some input.

I have a nice LED Bilge switch but it is a 2 way. I could order a 3 way, Auto, Off and Man, or I could wire it directly to the fuse panel/battery for always on auto, which wouldn't be bad. Here are the diagrams. I am considering just wiring it without a switch. Not sure the switch really serves a purpose, unless I am missing something for the 2nd bilge pump.

I plan on wiring it tomorrow, weather permitting, after the mounting block sets.

 

[Babin Farms]

I have my second pump wired without a switch to the battery(fused). Never have to worry about forgetting if it’s on or not.

 

[HangOutdoors]

I have my second pump wired without a switch to the battery(fused). Never have to worry about forgetting if it’s on or not.

That is kind of what I was thinking.

 

[Babin Farms]

I’d put the high water alarm on a switch though. I had to turn mine off on the way to Bimini last year due to the conditions. It probably went off 20 times before I shut it off because it was driving me nuts. Every time we’d drop off the face of a wave it would trigger it for a second. Once we got to the island I turned it back on.

 

[HangOutdoors]

I’d put the high water alarm on a switch though. I had to turn mine off on the way to Bimini last year due to the conditions. It probably went off 20 times before I shut it off because it was driving me nuts. Every time we’d drop off the face of a wave it would trigger it for a second. Once we got to the island I turned it back on.

Excellent advice.

 

[Babin Farms]

Excellent advice.

That and the fact that if you do have an issue do you really want an alarm screaming at you while your trying to figure things out or fix the issue without the ability to turn it off?? Stress X100 if there is no way to turn it off other than to pull the fuse.

 

[FSH 210 Sport]

When I installed my second bilge pump last winter I fed the auto off of a 5A ckt breaker associated with the rocker switch I use to supply power to the DVSR. The manual side is fed from another dedicated 5A ckt breaker on the aft bilge pump switch. This in turn is fed from a 30A ckt breaker that is next to the battery and supplies power to the aux bus I installed, and this breaker is fed from the switched side of the house battery.

The way I figured it, if the boat is on the water the house and start batteries will be switched on and the 12V aux bus will be energized.

So, you could just feed the auto side from the switched side of the house battery switch, or directly from the house battery. If you have a free ACC switch you could run the feed for the manual side from that ACC switch and its associated breaker?

Personally I’d rather have a ckt breaker feeding the aux bilge pump rather than a fuse. My boats OEM bilge pump is always hot from the house battery and is fused, the manual side is fed from a rocker switch that has a ckt breaker.

 

[HangOutdoors]

When I installed my second bilge pump last winter I fed the auto off of a 5A ckt breaker associated with the rocker switch I use to supply power to the DVSR. The manual side is fed from another dedicated 5A ckt breaker on the aft bilge pump switch. This in turn is fed from a 30A ckt breaker that is next to the battery and supplies power to the aux bus I installed, and this breaker is fed from the switched side of the house battery.

The way I figured it, if the boat is on the water the house and start batteries will be switched on and the 12V aux bus will be energized.

So, you could just feed the auto side from the switched side of the house battery switch, or directly from the house battery. If you have a free ACC switch you could run the feed for the manual side from that ACC switch and its associated breaker?

Personally I’d rather have a ckt breaker feeding the aux bilge pump rather than a fuse. My boats OEM bilge pump is always hot from the house battery and is fused, the manual side is fed from a rocker switch that has a ckt breaker.

I don't have any spare ACC switches I would have to cut one in. Getting bored of cutting things in the boat . I only have 4 more days before trip and I have a ton of things to accomplish to it before we head out.

 

[FSH 210 Sport]

I don't have any spare ACC switches I would have to cut one in. Getting bored of cutting things in the boat . I only have 4 more days before trip and I have a ton of things to accomplish to it before we head out.

Right on… auto it is then!