Please Help? I want to measure automotive alternator amperage output. With the shunt in the charging cable, where do the other wires go?
1427374
red wire goes to pos on battery black goes to neg on battery ,alternator red wire goes to one side of shunt the red wire you removed alter goes to the other side now the yellow wire goes to the side of the shunt from alternator and white wire goes to the other side of shunt,green wire goes to pos load just past the shunt.ONE thing is this unit is made to work on the neg. side.
1427375
The white and yellow hook on the small screws on the shunt. The black wire is negative battery or a ground. The red and green are both hooked to battery positive. When pushing the small switch on the front, the readout switches from amperage to voltage and vise versa.
1135176
Shunts are for measuring DC current, AC current is detected with a CT or current transformer. The CT slips around the wire you wish to detect the current of.
2067247
You are showing a need of 150 amps of measuring range. The unit range shown is 50 amp. I think Amazon offers others that may be good for the 150 amp range that can be powered from a 12 volt battery. They will show the charge and discharge if wired in correctly. The current shunts are made to handle a wide range of current for measurement as long as you select it large enough for the application.
634091
Maybe this will help I hook it up to a 1993 chevy truck I hook the voltage wire right to a ignition wire 12 volts in accessory and 12 volts with key on the same wire test with a test light to find the right wire. the voltage measures my battery voltage and when running my charging voltage no problems. I bought the three in one meter voltage temperature and time you can isolate each one or have them all read showing individual readings intermediately so yes it's can read its own power but it is powered by your cars battery I hope this helps you. Ps I'm a auto tech for 37 years now. I Had some problems with the temperature sensor probe but they sent me a new one seems to work okay now. Just so you know it comes in 1 gage not 3 that's just showing you what the gage dose.
1293262
You will need a copper buss bar and some mc4 connectors. Run the positive wires in 10 gauge wire from the panels to the copper buss bar then a 8 gauge stranded copper wire from the buss bar to the charge controller. You can get a mc4 tee connector to tie the negative wires together and run one wire to the location of the charge controller. Do not do this for the positive wires from the panels to the controller, that's what I Sid first and found out a couple weeks later I was only getting power from one panel.
1837405
You can hire a mechanic to install this for you if you are not mechanically inclined. However, it is simple enough to set up. Alternator wire (+) to one stud, starting battery positive to one stud, secondary battery positive to one stud and "exciter" wire to small stud (this is only hot when the ignition is on. I pig-tailed onto a circuit in the fusebox). You MUST use the recommended sized wire to the secondary battery. You will also need to solder and crimp the proper terminals to your cable or find a shop that can do this for you once you have the correct length of cable. The included instructions are adequate. Hope this helps. C
2166118
Yes. As long as you make sure that ALL the negative cables from the battery go to the shunt that is included with the meter, It will show you amps being used, total amp-hours used and amps that the battery is being charged from alternator, solar panels or battery charger.
780567
No, you do not. It is recommended to install an AGM type battery with this excellent alternator but, not necessary. Any excess current is shunted away from the charging circuit. Same as with your original battery which also over-produced at higher RPMs.
755415
No. It will show volts only. For alternator output voltage is only 1/2 of the equation.
1453632
Have a large gauge wire running directly from the battery or alternator to one of the large posts on the relay. Connect the other large post to the radiator fan. Then, run a small gauge wire from your fuse block (usually on a circuit that turns off/on with the ignition switch) to one of the small posts on the relay. Then hook the other small post to ground.
267781
assume the charger is an isolated 12V charger, and current maximum is 100Amp. calculate the vale of shunt = 0.075/100 = 0.00075 ohm (connect shunt on the negative side of the charger) And connect wires from meter as follow, Black wire to negative side of negative of the charger SHUNT is 0.00075 and connect between nagative side of the charger and negative side of the battery (use Big 100A wire 8AWG). positive charger to battery positive (use big 100A wire 8AWG) Green wire to (-) side of shunt. Yellow wire to (+) side of shunt. blue and red wire to battery positive. now you can read charger voltage and charger current.
1131198
No, the other answers are wrong. It does not test not alternator amperage. For that, you would need an ammeter. Use a DC clamp ammeter so you won't have to break the circuit. What the BA7 does check is the alternator voltage. You can also do that with any accurate voltmeter. The proper alternator voltage when the car is running is 13.5v to 14.2v across the battery.
548316
Because the current is constant anywhere within the "loop", you can measure amps anywhere in the line. However, voltage "drops" across various components throughout this loop. If you want to measure the performance of your battery (common), place this item close to the battery between the charging source and the battery to be most accurate.
1399741
The wire that comes from the fuse holder is a positive + connection only and should be connected to the positive wire on your charger. You should have a negitive wire coming the charger that should be connected to a ground source near the fuse box.
2274003
I used a red and a black #18ga wire. If you want a constant read on the meter even when the vehicle is off, you will need to find a constant hot source. I ran it directly to the batt. The wire can be bought at any auto parts store.
1656006
It powers from the power source you measure. It will come with wires to go to system positive and ground. But I really recommend you don't buy this product. I ordered two and they both gave different erratic readings for the 5 minutes they worked. Steer clear of this item.
599447
yOU need to contact a Honda dealer with this question. my charging sys now operates at 14.3 amps havn't had to put charger on since install.