Thread: 12v Outlet
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Old 12-07-2022, 02:40 PM   #10
C lectric
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City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,187
Based on personal experience I would not use a cigarette type plug for this application.

THey are NOT rated for more than about 10A.

Aside for it being too light duty for your intended potential use I found they would lose the pressure holding the central plug contact against the central receptacle contact resulting in glitches and small inverter goofups from lack of reliable power and my small inverter goofing up.

I just looked at my spare and the internal fuse is 10A.

I still use my dash mounted unit for the USB only function to drive my two tablets and when not running recharge my handheld VHF. But the current going through is only a couple of amps so it seems to work OK with that.

I tried the cig. type plug for my small freezer, Danfoss BD35 drawing about 4-5 amps. Constantly got low voltage shutdowns. I figured out that I actually had to stand there holding the two plug parts together. Same type of problem as above.

The freezer connection I changed to the plug/receptacle type for Scotty
Downrigger motors which are set up for about 30A/12V loads. THey are a sealed twist lock plug/receptacle from Marinco and/or Scotty Fishing gear in my area.
Scotty p/n 2125
Marinco p/n 12VCPS2

Since I made the freezer supply change 3 yrs ago no more problems.

Or use a trolling motor plug/receptacle kit [Marinco}which are three pins and rated for higher current.
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