<div dir="auto">My experience with SW inverters not synced with a cable is that they would drift to 180 degrees out of sync over a period of about 20 minutes. I could measure phase to phase and see it go from ~240VAC to 0VAC in that time frame. In another 20 minutes or so the volts would creep back up to 240 again. </div><div dir="auto"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com">www.millersolar.com</a><br></div></div></div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Jul 15, 2026 at 6:57 AM </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div dir="auto">"Magic Stacking" <span style="border-style:none;background:none">was when you wired them in 120/240 and used</span> a generator or grid power to sync the output waveforms. That waveform would stay synced for quite some time, days if not weeks, as long as you didn't load them<span style="border-style:none;background:none"> more than 75%.</span><a href="http://www.members.re-wrenches.org" rel="noreferrer" target="_blank" style="font-family:-apple-system,sans-serif"></a></div></div></blockquote></div></div>
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