Distributed vs. Conventional Electrical Systems
I'd always thought Amel was ahead of the curve with its Distributed Electrical System. That seems to be the direction the industry is going, now with solid state circuit breakers controlled through the NMEA2000 data network. Eliminates the large industrial style circuit breaker panels of yore and adds great flexibility. Check out CAPI2, C-Zone, Octoplex, etc. Seems Amel is going backwards technologically if they're centralizing. Let's see, your anchor washdown pump shorts and rather than it tripping an adjacent breaker it's got to overload a 15 meter long cable run back to the central circuit breaker panel. To say nothing of the excess wiring to give all equipment a "home run". Must be missing something in this discussion.toggle quoted messageShow quoted text
Cheers, Craig SN68 Sangaris
---In amelyachtowners@..., <sailw32@...> wrote :
Tom, There are many pieces of equipment throughout the boat located much further from the power source , with their breakers located next to the equipment. This has always concerned & puzzled me , as we have long runs of hot wires not protected until they reach the breakers. Thursday evening Diane and I had the pleasure of having the owners of SM Kerpa , Paul and Kerstin and Olivier as well , to our home for dinner . I asked about this set up , with breakers remotely located . Olivier pointed out that Amel now locates all the breakers in a central location , assumedly at the nav station and close to the batteries . This not only makes it much easier and quicker to locate the breakers , but provides protection from dead shorts . I think it was very good for Amel to adopt this electrical configuration . On our model , I think we need to assure that wires are bundled with minimum movement and protected from chafe. Obviously, if Amel had a do over on our model , they would adopt this new configuration . We may get down to Rock Hall before , Nov , if so we"ll stop by .
Have a good trip,
From: Thomas Peacock peacock8491@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Sun, Oct 15, 2017 8:46 am
Subject: Re: [Amel Yacht Owners] "Permanent" on 12v/24v
One last thought or two:
To answer your question directly, no other reason to have an always hot Sailor transformer.
As a question to you and others:
I have just replaced the battery monitor due to the original unit going bad after 18 years (they don’t make them like they used to). Tracing the wiring, there are two permanently hot wires going from the battery to the monitor; each wire is fused, located in the battery compartment. The monitor instructions indicate that the fuses should indeed be placed as close as possible to the batteries. That all seems great and as it should be.
I was concerned about whether the permanent Sailor unit was fused in a similar fashion. However, the wiring as it exists goes through the breaker (but somehow bypassing it) in the hanging closet. That breaker dos not cut off power to the Sailor unit. The Sailor unit does have fuse, as per Olivier. Am I correct to assume that the lack of a fuse more proximal to the battery is still safe?
SM 240 Aletes