¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: Question about bus bar safety


 

Printed plastic labels have a tendency to peel off. Leaving you clueless.
When they ARE in (the correct) place, it is good !

I bought a swedish boat, labelled extensively by the former DIY owner.
But some were peeled off, some showing wrong. In swedish, of course, but no problem for me.
I decided not to trust those labels.

In general, less that 70V is not considered "dangerous" in a EE's mind.
So. just tell your coming new owner of your carefully designed DIY boat, that there are more than the usual 12V or 24V system onboard.
That'll jusitfy the use of a multimeter - you're so right, Ryan !

(I'll design my upcoming 48V 12KW motor and battery system to be possible to deliver 96V to the motor. "Nitro" electric, for emergencies !)

I would make a printed documentation of the system (sealed ?), to follow the boat documents.
Then your back is free. New owner has to read all docs before using the boat,right ?

Carsten


On Tuesday, 30 March 2021, 03:08:36 GMT+8, Ryan Sweet <ryan@...> wrote:


That¡¯s a good one, I¡¯ll make good use of the label maker this week. ;-) I¡¯m going to add ¡°always use a multimeter to verify your assumptions about the circuit before beginning work.¡±

On Mar 29, 2021, at 12:00, Daniel Michaels via groups.io <nov32394@...> wrote:

?
A general warning at the electrical panel stating that "This boat has 12 and 48 volt buss bars.

Dan

On Monday, March 29, 2021, 12:27:51 PM MDT, Mike hurley via groups.io <redwood1957@...> wrote:


Seams as if there should be color codes for ac/ DC48 and dc12 for pos/ and neg


On Sat, Mar 27, 2021 at 2:03 PM, Ryan Sweet
<ryan@...> wrote:
Typo, hopefully obvious
¡°48v or 12v¡±

Why do we still use asdf keyboard layouts on thumb driven mobile phones? Sigh.

> On Mar 27, 2021, at 10:57, Ryan Sweet via groups.io <ryan=[email protected]> wrote:
>
> ?For those of you that have 12v systems and 48v systems, is there a standard or convention for making it really clear that a given bus bar is 48v or 12c?
>
> Mine are in very different places in the boat and I¡¯ve taken to putting plastic covers over the top and then taping really big labels on them and updating the drawings kept on board (still I¡¯m trying to think of someone working on the boat with no drawing and no history of the installation etc). I know they could and should check with the multimeter but I also feel an obligation to protect a future diy boat owner from themselves if they fail to do that. Hence, wondering if there is some convention.
>
>
>
>





Join [email protected] to automatically receive all group messages.