Welcome to Carver Yachts Owners Forum
We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com
You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
What kind of A for DC Breaker Switch?
- sandro.klersy
- Scurvy Dog
- Posts: 19
- Joined: January 1st, 2018, 2:35 pm
- Vessel Info: Carver 2897 Mariner 1988
- Has thanked: 4 times
- Been thanked: 6 times
What kind of A for DC Breaker Switch?
Please help me...., in my ‘88 Mariner 28 i need to replace some AIRPAX T11 breaker toggle switch in order to have all the main panel working correctly. But now i can’t read on it what A (ampère) they are supported for the different section (example stereo/blower etc....Do you know what A is needed for the INTERIOR LIGHT dc breaker?
-
- CYO Supporter
- Posts: 2310
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 324 times
- Been thanked: 595 times
Re: What kind of A for DC Breaker Switch?
I cant read the label from the picture, but the ratings should be on that label. If not you can go by wire size.
If more than one wire is on any breaker the breaker should be sized by the smallest gauge wire.
For 14 awg use 15 amp max. For 12 awg 20 amp max, 10 awg 30 amp max.
I doubt you have anything larger except your DC mains or windless which may be 50 amp.
You may have some smaller 5 or 10 amp breakers for stereo memory ortank gauges.
- sandro.klersy
- Scurvy Dog
- Posts: 19
- Joined: January 1st, 2018, 2:35 pm
- Vessel Info: Carver 2897 Mariner 1988
- Has thanked: 4 times
- Been thanked: 6 times
Re: What kind of A for DC Breaker Switch?
I will follow your advice to restore the cable contacts. I have see some part manual for other Carver biggest model and for the interior light is usually used an Airpax DC breaker of 15A...do you think it's the same for my '28?
Can someone tell me if it is possible to retrieve the wiring diagram of this model?
The contact us form of the carveryachts.com website does not work....
-
- CYO Supporter
- Posts: 6045
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 458 times
- Been thanked: 1699 times
Re: What kind of A for DC Breaker Switch?
tomschauer wrote:Source of the post...... For 14 awg use 15 amp max. For 12 awg 20 amp max, 10 awg 30 amp max.....
This rule is fine for AC but it's a little more complicated when considering a DC circuit. In a DC application, you need to consider the length of the circuit, not just the wire size. For example; in a 10% voltage drop application, a 14 awg wire will suffice in an 80 foot run at 5 amps, a 40 foot run at 10 amps, 25 feet at 15 amps, 20ft at 20A, 15ft at 25A, and 10ft at 30-40 amps. So what size breaker do you pick based on the wire size alone? You must know the wire size, the total circuit load, and the length of the circuit round trip to know for sure the proper size breaker that should be used, otherwise you may overrate and have the potential to cause a fire, or the breaker may keep tripping if underrated.
-
- CYO Supporter
- Posts: 2310
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 324 times
- Been thanked: 595 times
Re: What kind of A for DC Breaker Switch?
As Viper mentions above, with a long run, you will have lower voltage at the end of the line, causing the end device to use higher than rated amperage , but as long as the wire rating matches or exceeds the breaker rating the risk of fire is minimized, but the possibility of nuisance breaker trips is possible.
- sandro.klersy
- Scurvy Dog
- Posts: 19
- Joined: January 1st, 2018, 2:35 pm
- Vessel Info: Carver 2897 Mariner 1988
- Has thanked: 4 times
- Been thanked: 6 times
Re: What kind of A for DC Breaker Switch?
Carver have sent to me the attached document for the fuse/breaker table!
Today I’ve easily removed the dc switch panel only by disconnect 3 quick connector of the back. I have read a little better the Amp in each AIRPAX Breaker and someone have a different rate of mine.
Here you can find my configuration:
Light PANEL 7.5A
Light NAV ANCHOR 7.5A
Light SPOT 15A
Light INTERIOR 20
Miscellaneous WIPER 10A
Miscellaneous HORN 20A
Miscellaneous REFER 20A
Miscellaneous STEREO 2.5A
Miscellaneous TRIM TABS 20A
Accessories EXTRA 10A
Accessories SALON 10A
Accessories BRIDGE 10A
Exhaust Fans HEAD 7.5A
Exhaust Fans BILGE 7.5A
Pumps SHOWER 10A
Pumps WATER 15A
Pumps BILGE FWD 10A
Pumps BILGE AFT 10A
Now my problem is to retrive this breaker in Italy and online (Amazon or other electrical e-commerce). I have find it only by Osculati (a Biggest marine supply) but the available range of Amp are 5/10/15/20....
Can anyone suggest with which is better to replace the 7.5A....5 or 10 braker?
-
- CYO Supporter
- Posts: 2310
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 324 times
- Been thanked: 595 times
Re: What kind of A for DC Breaker Switch?
-
- CYO Supporter
- Posts: 6045
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 458 times
- Been thanked: 1699 times
Re: What kind of A for DC Breaker Switch?
You did the right thing by contacting Carver. At least now you know for sure what should be used.
- sandro.klersy
- Scurvy Dog
- Posts: 19
- Joined: January 1st, 2018, 2:35 pm
- Vessel Info: Carver 2897 Mariner 1988
- Has thanked: 4 times
- Been thanked: 6 times
Re: What kind of A for DC Breaker Switch?
-
- CYO Supporter
- Posts: 2310
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 324 times
- Been thanked: 595 times
Re: What kind of A for DC Breaker Switch?
Found by size of tab and thread size.
Such as 3/8 female tab by 10/32 screw.
Who is online
Users browsing this forum: No registered users and 28 guests