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daver clasper
November 18, 2017, 7:59pm Report to Moderator
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Hi

Have that was fitted to car when I bought it.

I know there's pro's (few) and cons (mainly a fire risk).

I understand they can have been wired in different way to show different things?.

Mine seems to sit in the middle of +/- and shows different levels of amp use when different electrical components are used.

Doesn't seem to show how much the battery is charging in relation to this, though I'm not sure what I'm supposed to be looking for.

Any help great please.

Cheers, Dave  
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Hogie
November 18, 2017, 8:58pm Report to Moderator
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Hi Dave,
        as you have seen if you switch on a load, head lights etc, then you will see a discharge..
When you start the engine you may see a big charge (20A or so) for a short time 10 seconds or so.
This will back off fairly quickly and settle down to a few amps.
The ammeters are not precise instruments. A few amps may not register but it will be there.

You shouldn't see a big discharge with the engine running unless your loads are greater than what the generator can supply.

The ammeter should only show the charge / discharge flow and shouldn't reach the max value of the gauge - but if the genny goes down with lots of load on then things could get interesting.

Roger



TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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Spitfire6
November 18, 2017, 11:15pm Report to Moderator


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Hi,
To have your +/- ammeter reading Amps from and into battery; it must be wired between battery and loads.
So, WRT the above, the only cables/wires on your +ve battery terminal should be cable to starter motor (you don't want this current going thru the ammeter) and cable to ammeter.

Cheers,
Iain.


Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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Hogie
November 19, 2017, 12:41pm Report to Moderator
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Hi Iain,
          I didn't say how many leads are on the battery.


You could have all the loads coming off the  starter motor cable (at the solenoid) thus by-passing the meter. That way the ammeter only reads charge/discharge.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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Spitfire6
November 20, 2017, 10:42pm Report to Moderator


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Hi Roger,
I was replying to all and not directly to you.
So, as I said:


Quoted from Spitfire6
Hi,
To have your +/- ammeter reading Amps from and into battery; it must be wired between battery and loads.
So, WRT the above, the only cables/wires on your +ve battery terminal should be cable to starter motor (you don't want this current going thru the ammeter) and cable to ammeter.

Cheers,
Iain.


Doug, Please correct the above if i have made any errors in the above, as I will learn from my mistakes.

Cheers,
Iain.


Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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Hogie
November 21, 2017, 9:14am Report to Moderator
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Posts: 1,346
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Hi Iain,
           I was reading too much into it.

Roger


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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