Re: (ET) kill-a-watt

[robert winfield <winfield100 yahoo com>]

what voltage for string?

--- Christopher Zach <cz alembic crystel com> wrote:
> get yourself a Sunny 
> Boy 700 for $1,000 or so. Three OK4's would cost the
> SB, and the SB is a 
> much more modern bit of technology.
> 
> Myself, I have two strings of 75 watt panels hooked
> up to a Sunny boy 
> 1800 inverter. Works pretty well actually; I like
> it.
> 
> Chris
> 
> 
> 
> > 
> > Joel
> > 
> > Original Message:
> > -----------------
> > From: Tim Humphrey hump evgrin com
> > Date: Thu, 21 Dec 2006 7:33:55 -0700
> > To: elec-trak cosmos phy tufts edu
> > Subject: Re: (ET) kill-a-watt
> > 
> > 
> > 
> > 
> > 
> > 
> > Chris Wrote:
> > 
> >> David Roden wrote:
> >>> On 20 Dec 2006 at 13:09, Christopher Zach wrote:
> >>>
> >>>> he's using a grid-tie inverter.
> >>> Yes, but unless I misunderstood the description,
> he's backfeeding the
> >>> Kill-a- watt meter.  Unless he modified the KaW,
> that would require a
> >>> double-male cable, no?  Or am I missing
> something here?
> > 
> >> Typical use of the OK4U was to put a plug on it
> and plug it into the
> > nearest
> >> wall. This would handle the NEC of the 90's, I
> think it was NEC
> >> 02 that called for a dedicated breaker for all
> grid tie thingies.
> > 
> >>> I know some folks will dismiss this concern, but
> IMO it's not a great
> >>> idea to even have such a cable around the house.
> There's too much
> >>> chance of an accident.  Even an adult can grab
> it, thinking it's an
> >>> extension cord, and get a nasty surprise.  For a
> little tyke, it could be
> >> disfiguring or fatal.
> > 
> >> Since it can't generate power without the grid
> (ie plugged in) and drops
> >> power as soon as you unplug it it's about as safe
> as any appliance.
> > 
> > 
> > But Nellie's point was, the fact that a double
> ended cable exists lends
> > itself to disaster *ANYBODY* can take it and plug
> it into the a normal
> > outlet and end up with exposed live prongs.
> > 
> > I agree with David, I also agree with Chris. In
> Chris's scenario the cable
> > should be considered safe. BUT, remove the cable
> from that specific
> > environment and it now becomes very dangerous.
> There are, I do not know the
> > model number or name, cable ends that have a prong
> cover that moves away to
> > expose the prongs when inserted into an outlet.
> Those are the minimum I
> > would expect to see on such a cable (both ends).
> If anybody knows a source
> > for these I would appreciate it, I need some....
> > 
> > --
> > Stay Charged!
> > Hump
> > I-5, Blossvale NY
> > 
> > 
> > 
> > 
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