[RE-wrenches] NEC 690.64 (B) (2)

[Glenn Burt]

Al,

 

SMA has a good whitepaper on their site covering this, and there was an
article in a recent Solar Pro covering this topic as well.

Good Luck!

Glenn Burt

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Al Frishman
Sent: Tuesday, December 07, 2010 5:51 AM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] NEC 690.64 (B) (2)

 

Wrenches,

How do you apply NEC 690.64 (B) (2) when you have multiple single phase 

inverters distributed across the 3 phases of an electric-panel via 2 pole
breakers? 

 

Do you simply add up the total of all over-current devices feeding the 

panel (Inverter 2-pole breakers and main breaker) or is there a 3 phase 

formula that gets applied?

 

It seems logical that if the single phase inverters are connected with
2-pole breakers

Distributed across the 3 phases then you would take the sum of what is on
each phase.

 

Any and all input on this topic is appreciated.

 

Regards,

Al

Aeonsolar

917 699 6641

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20101207/69471535/attachment-0003.html>