[RE-wrenches] grounding the Enphase inverter

[William Miller]

Bill:

Other than  complying just because this is a rule that has to be followed, 
is there any logical foundation to the requirement to provide a #8 ground 
to a circuit with OC protection at 20 amps?

If there is a valid safety reason, then let's all get behind it and become 
adept at providing this GEC.

If the rule makes no sense, let's advocate that it be changed.

What is the reason for providing this GEC to an inverter?

Thanks in advance.

William Miller




At 09:51 AM 3/4/2011, you wrote:
>System grounding requirements.
>
>-----Original Message-----
>From: re-wrenches-bounces at lists.re-wrenches.org
>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Mark Frye
>Sent: Friday, March 04, 2011 7:51 AM
>To: 'RE-wrenches'
>Subject: Re: [RE-wrenches] grounding the Enphase inverter
>
>The interesting thing to me is the underlying assumption in the Code that a
>GEC is requried for grid-tied inverters at all. Why isn't EG sufficient for
>function and safety.
>
>Which of the following common electrical equipment has the same requirement:
>
>UPS
>Motors with regenerative energy disipators
>DC power supplies
>Standby generators
>
>??
>
>Mark Frye
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