Volt meter and such.... looking for a data panel...
i've been hunting... clicky right heee-a! let me know what ya think. pretty straight forward, no?
Forum Discussion
Hi Salvo,
Not into scare tactics. Just revealing my own thought processes. You are right a 500 amp shunt is unlikely to burn out--until some one does something stupid such as shorting the input to a large inverter.
The usual derating for shunts was 66% when I researched them. My hall effect meters seem to agree very well with a high end fluke ammeter. They may be less accurate--and the DC ones I use do stop at + or - 70 amps.
Not into scare tactics. Just revealing my own thought processes. You are right a 500 amp shunt is unlikely to burn out--until some one does something stupid such as shorting the input to a large inverter.
The usual derating for shunts was 66% when I researched them. My hall effect meters seem to agree very well with a high end fluke ammeter. They may be less accurate--and the DC ones I use do stop at + or - 70 amps.
Salvo wrote:
If you abuse any meter it will burn out. Your scare tactics are not valid. This is a 500A shunt! You need in excess of 500A for a fairly long time to burn this shunt.
In general, if a shunt does blow, it's the the fault of the shunt but the person who installed it. Shunts must be derated by 50%. If maximum current in a shunt application is limited to 50A, then use a 100A shunt. In the OP's case the shunt is rated 500A. It's overkill, but it will never blow. The battery in-line fuse will blow first.
As far as using shunts vs. hall effect, I believe shunts have more accuracy and can measure small currents.
BTW, that looks like an excellent meter. Go for it!
Salpianotuna wrote:
I don't like the shunt because it IS possible for it to burn out.
