Switching Array Leads [RE-wrenches]
Drake Chamberlin
Drake.Chamberlin at redwoodalliance.org
Tue Aug 7 16:37:03 PDT 2007
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CORRECTION
The code now requires the neutral lead not be switched, unless it is
switched as part of a ground fault detection system.
This is too bad, since the Siemens HF 262 disconnect has a 600 VDC
rating, but only if you can switch both leads. The NEC rules nip
this less costly option in the bud. Nearly $400 for the Square D,
3-phase disconnect, and $145 for the Siemens 2-pole unit.
According to Siemens, the 2 pole disconnect is good with wind
systems, to isolate the Windy Boy. In this case.
Drake
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