[RE-wrenches] Input Current Imbalance

Nick Soleil nsoleil at enphaseenergy.com
Wed May 29 17:41:49 PDT 2013


Hi Corey,

Are you sure the meter was zeroed?  If the meter was reading 0.5A at rest,
then that would happen.


On Wed, May 29, 2013 at 5:01 PM, Corey Shalanski <
cshalanski at joule-energy.com> wrote:

> Wrenches,
>
> I recently noticed something that seems to defy one of my basic
> understandings of electrical circuit theory:
>
> Single string input at inverter. Clear skies, full sunlight. With inverter
> turned on my clamp meter reads (for example) 5A on positive conductor and
> 4A on negative conductor.
>
>
> I've always assumed that the current should be equal at every point in the
> circuit.
>
> I've noticed this "imbalance" on several different inverter brands. Has
> anyone else ever observed this? Can someone offer an explanation for this
> and satisfy my curiosity?
>
> --
> Corey Shalanski
> Joule Energy
> New Orleans, LA
>
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-- 

Cordially,

*Nick Soleil*

*Field Applications Engineer
*

*Enphase Energy*

Mobile: (707) 321-2937


**

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