Fuses, Diodes, resistors...panels.. etc. - SailNet Community
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post #1 of 41 Old 04-07-2011 Thread Starter
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Fuses, Diodes, resistors...panels.. etc.

Fuses, Diodes, resistors, MS can you chime in on this?

large & small fuses, vs breakers battery applications, house wiring etc. - where and how to install, size, types, cost, where to buy.

Diodes - what they do. where to use them, how they work,

Resistors - ditto

Also, things like terminal blocks, strips, logic in wiring layouts.

accessibility and logic applied when "rewiring" or "upgrading"

Do older boats actually have "tinned marine wire and cable"?

I know I've more then a few questions regarding all the above. I'm sure many others here would love to know more, share their knowledge and experiences.


What prompted me to start this thread is the Newmar battery charger on my boat. it's dual circuit and only hooked up to one bank. I don't want to just start changing things on my boats wiring without checking with the experts!

ABC 12-25 DC Power Onboard with Newmar’s ABC Battery Charger series. The ABC series have been in the Newmar Line for 30 years. Utilizing time tested SCR charging circuitry, individually sensing and regulating each of the 2 isolated battery banks, allowin
ABC Series
The ABC Series chargers have been in the Newmar line for 30 years. They utilize time tested SCR charging circuitry, individually sensing and regulating each of 2 isolated battery banks, allowing the user to leave the charger operating indefinitely, even under no-load conditions without fear of overcharging. These chargers are ideal for vessels or vehicles which have an intermittent demand for battery power.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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post #2 of 41 Old 04-07-2011
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Over the years as stuff burned up things have been done to lessen the chance

Seafever has gone from 6 /15 amp fuses as the only protection to

2 big fuses on the battery's

2 big fuses protecting the ACR

2 small fuses protecting the ACR controls for some reason you even have to fuse its reference ground

2 40 amp breakers each protecting a six switch panel with yet 6 more breakers


My home has gone through much the same upgrade with the Kitchen having more requirements than the complete original home

My original 1981 J24 was not tinned and it all turned black and had to be replaced because the voltage drop got so bad i think because its a wet boat

The 1970 Cal 29 wire is not tinned and the wire looks OK but the insulation is kind of stiff and past its due date

A big issue on the Cal was the gasoline A4 and Blue Sea makes this painless as they make a line of panels with ignition protected breakers and switches

1970 Cal 29 Sea Fever

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1981 J24 Tangent 2930
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Last edited by tommays; 04-07-2011 at 10:09 AM.
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post #3 of 41 Old 04-07-2011
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Denise

You can't go wrong with Blue Seas. Blue Sea Systems

On the left of the page are the links to panels, switches, fuses, etc. At the top of the page is a link to Resources, where you can learn about fusing, wire sizing, and ABYC requirements.

Diodes and resistors are generally not used by themselves.

Many if not all 30 year old boats were not wired with tinned wire. If the old wire is suspect replace it with tinned, using crimped connections and heatshrink. Maine's tutorial covers it well. Marine Wire Termination Photo Gallery by Compass Marine at pbase.com

Brian
Living aboard in Victoria Harbour
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post #4 of 41 Old 04-07-2011
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Hi Denise,

My '87 O'day (built in '86) did not use tinned wire. You probably saw in my thread that the wires pulled through the bilge were, IMHO, toast.
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post #5 of 41 Old 04-07-2011 Thread Starter
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Picked up a ACR about a week ago. still need to get the fuses. Thanks guys! keep it coming! I'm sure my boat's wiring is not tinned.. and I could add lots more batteries.. but in the engine compartment?

so when was Tinned wire required? newer boats have it?

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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post #6 of 41 Old 04-07-2011
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Maxi Fuse Inline Fuse Holder w 8 AWG leads up to 60A

I had genuinedealz crimp and shrink 3/8 lugs on these to protect the ACR and at lless than 20 dollars each i found them to be a good solution at a good price




I would have loved to move things to other places BUT all of them just had worse issues with being wet or had a lack of ventilation

1970 Cal 29 Sea Fever

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That is a bit light for an ACR, which will link the 2 battery banks with heavier wire, anywhere from 1 awg to 2/0 depending on bank size. I would use these:
Attached Thumbnails
1.jpg  

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post #8 of 41 Old 04-07-2011 Thread Starter
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Tommays genuinedealz's prices are really low!

Brian gmta lol I had these in mind.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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Denise
The Sea fuses you show are good as well. A bit less money than the ANL I showed.

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I only have a 35 amp alternator and the leads are only 10" long in charge testing it was hard to even get 20 amps going through the ACR when it combined

1970 Cal 29 Sea Fever

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