Al, old notes follow; you probably have this but it may help the new guys:

Tracy Crook wrote:
>
> The EC2 itself only uses about .15A.  The pumps I have are rated as 8 A. Max
> but the measured typical load during cruise conditions is only around 4A.
> Total system load in emergengy mode (all non essential stuff off) is about
> 13 Amps.  I have just over an hour to find a place to land if the alternator
> quits.  BTW,  it is nuts to fly one of these "electric airplanes" without an
> alarm to warn of alternator failure.
>
> Tracy Crook

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I calculated that at 6000 rpm that the current draw as below:
    
    Injectors (Peak and Hold type)  3.3 amps (calculated)
    EFI Pump (one running)   5.6 amps (according to specs)
   Ignition Coils (lead only)     7 amps (estimate - could be on high side)
  Additional - CPUs etc           1amps (estimate)
    
      Total  - 16.9 amps
    
  Ed Anderson
    

-------------- Original message --------------

There have been various numbers bandied about on the current requirements to run the engine, but I go back through my notes and find I don’t have any firm idea. Too much inconsistency. It would be nice to know for each item – injectors, coils, pump, etc.; but I’d be happy to have a measured total current draw to run the engine: 1 of Tracy’s fuel pumps, all the injectors, all the LS1 coils, and the EC-2.

Anybody operational with an ammeter that could turn everything else off, battery charged, run at high rpm – like 5000-6000, and measure the current?

Nothing in Tracy’s write-up on the EC-2 except that he uses a 50A breaker on the engine critical bus. I would hope the steady value is about a third of that; or less.

Al