Re: [RE-wrenches] Imbalanced Legs in 3-Phase systems

2008-08-08 Thread Bill Brooks
' Subject: Re: [RE-wrenches] Imbalanced Legs in 3-Phase systems Jeff, My memory also recalls something about a 6kW value. I've talked to one of our local utilities about this as well and they base the accepted imbalance by the size of the transformer serving the building. I have never read

Re: [RE-wrenches] Imbalanced Legs in 3-Phase systems

2008-08-08 Thread jay peltz
Hi Bill, Can you explain why the 6kVA rule on split phase systems? I mean why 6? thanks, jay peltz power On Aug 8, 2008, at 8:48 PM, Bill Brooks wrote: Jeff and Ryan, The 6kVA value comes from the California Rule 21 that I worked on. It only applies to split-phase 240V systems (6kVA on

[RE-wrenches] Imbalanced Legs in 3-Phase systems

2008-08-07 Thread Jeff Clearwater, Village Power Design
Hi Wrenches, How does one determine how much imbalance can be tolerated on a 3 phase system? I'd like to feed 2 SMA SB5000s at 277 VAC into a 480 VAC panel instead of 1 13 KW Solectria at 480VAC as the PV system is only 9500 Watts STC. The main on the backfed service panel is 600 A. But I'm

Re: [RE-wrenches] Imbalanced Legs in 3-Phase systems

2008-08-07 Thread Darryl Thayer
feed the panel to connect. Which is the concern of the electrical inspector. Darryl --- On Thu, 8/7/08, Jeff Clearwater, Village Power Design [EMAIL PROTECTED] wrote: From: Jeff Clearwater, Village Power Design [EMAIL PROTECTED] Subject: [RE-wrenches] Imbalanced Legs in 3-Phase systems