Joel
Original Message:
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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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