> If I remember this correctly, there needs to be a shunt in the > electrical > system either internal in the ammeter or between the master switch and > ammeter. See, this is where I'm rusty and need help with wiring. My > ammeter doesn't have an internal shunt, so I need an external > one-----right? And to make sure, it goes where? > Mike
Hi A shunt goes in PARALLEL with your ammeter, imagine your ammeter as a narrow pipe, not much can flow thru it, the shunt is a larger pipe, so most the flow is thru the shunt, and a small amount of current flows thru the ammeter. The proportion of flow is fixed by the size of the shun. So if you have a multi range ammeter, you may have several different size shunts, and a switch to choose which one to put in parallel. An ammeter shunt has to be the one specified for that particular ammeter, if you use someone else's shunt, it will read inaccurately over the whole current range. Pete
