What Is The Purpose of a Shunt?
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- Опубліковано 23 сер 2024
- John asks, "This may be a silly question, but what is the purpose of a shunt? I have a battery monitor on board, do I attach the negative wire from the solar monitor going to the batteries to the shunt or straight to the batteries?"
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Thanks. Now I'm going to search for a video that is actually, like, "Shunt 101," for those of us who didn't take a college-level "Elec" class.
After installing two solar panels and a Renogy controller on my boat, my Xantrex battery monitor was registering the charge the panels produced as negative. After panicking, I finally calmed down and realised I had connected the Renogy to the wrong side of the shunt. Now everything is perfect. Excellent video, no waffle or padding and I wish I had seen this video before I undertook the install. Good job!
Hi,Thanks for these Q n A’s. I’ve previously watched your seminars which are also excellent although quite often they are too technical for my needs. This is the sort of knowledge I require to keep my narrowboat safe and efficient. So thanks and keep communicating your skills to us.
Hi David, thanks for the feedback.
Your videos are always so informative. Awesome stuff!
Glad you like them!
I love your video. I'm learning a lot from them. FYI, P=VI is learned in high school physic. So most people should know that but just don't remember as they never put it in practice.
Thanks for the feedback. Unfortunately not all topics are taught with the same level of enthusiasm, even electrical systems can be interesting to most.
Great answer
Glad my response resonated with you.
Does this apply to the negative going to an inverter, or do we go directly from the terminal? Thanks
Thanks FTI
you never answered the question, what is a shunt?
Appreciate the effort, but after watching, I still don't know what a shunt is or why anyone would use one. Agree with @Mmmyess .
Nice Hat!!! I’ve never seen you in one!
Thanks Linda.
Thank you so much my man!
Any time!
impressive
Hello, can you make a diagram explain again? Thanks in advance, Paul it makes much easier to understand always with a image. Sorry for asking again, Thanks, Paul
Thanks for the suggestion.
Thank you, none of the other advisors have mentioned this restriction on negative hookups. I'm designing a solar system for my motorhome independent of starting and running battery system. Should this separate system be grounded to the vehicle frame? Please, why or why not?
Hi Michael, our expertise lies with boats. Perhaps a fellow RVer can recommend ground techniques for a motor home.
Hi Jeff. Why would I use a battery combiner and an isolator? I’m doing a total rewire this winter and I’m wondering if I should install both. Thanks for the helpful videos. Toby.
Good idea for another video. There should be some other PYS UA-cam videos on this topic.
Very interesting videos. I have an on/off switch for a battery combiner. Should it be on at all times?
The short answer is no. You should only have batteries manually on combine if you need to share a charging voltage or if you need both batteries to start an engine.
Hi Jeff. I'm looking to connect my shunt directly to my existing negative distribution busbar. Upon inspection, my negative distribution busbar is nearly overloaded with connections. How can I extend my single negative distribution busbar? Is that possible?
Hi Chris, either extend your distribution bar with another bus bar or replace with a even larger distribution bar:
www.bluesea.com/products/category/18/5/BusBars/PowerBar
Hi Jeff, is it a problem if the positive wire (going to the battery) and the negative wire (going to the shunt) - which are both coming from the MPPT - have a different length?
Nope, that's not a problem. Quite often the positive and negative wires are different lenghts.
Thanks, now I think I know what a shunt is used for. Do they have a meter built in?
Yep, for instance the victron smart shunt does just that.
The question "What is the purpose of a shunt" was not answered. Questions like how it works and what is does and how to install it were answered, but not the purpose to my humble opinion.
So I would like to ask again "What is the purpose of a shunt", why would I install it. I charge my battery when I can, as much as I can and try to use them as little as possible anyway....
The purpose of the shunt is to measure current.
@@PacificYachtSystems That is what it does, but what is the purpose of measuring the current....... it is data but what is de information. What decisions do you make based on it?
Shunt isn’t needed it’s kinda gimmicky. If you have a solar mppt from like Victron with Bluetooth you can get a lot of info. In my world enough info. It’s not accurate like a shunt but okay. You can tell the charge of the battery by the voltage in the app when there is no load on the battery. No charging or drawing power from it
Shunt isn’t needed it’s kinda gimmicky. If you have a solar mppt from like Victron with Bluetooth you can get a lot of info. In my world enough info. It’s not accurate like a shunt but okay. You can tell the charge of the battery by the voltage in the app when there is no load on the battery. No charging or drawing power from it
there is no way to tell SOC though. If the battery bank is at 13.3v with solar charging the batteries, they could be 50%, 80%, 99% SOC. you wouldn't know by voltage or current alone
@@PacificYachtSystems wrong! If you have 13.3 volt on a agm battery it will never be 50% ! If you disconnect charge and consumer and let the battery idle for 30 minutes
?????
I did not understand absolutely nothing.
Use diagrams when trying to tell viewers with no electrical background.
This video is useless.