Hey Al,
I had a similar choice to make several months ago. There are not that many
options out here in Hawaii—given the more demanding utility requirements for
grid-tie inverters—for string inverters that are true 3-phase 120/208 while the
choices are more abundant if you have 277/480 as
Yeah, if you have a single module on two rails, you still need to use WEEBs
or another bonding method.
Jason
On Fri, Jun 26, 2015 at 5:49 PM, August Goers aug...@luminalt.com wrote:
Chris,
You are correct – there is just a bonding Unirac mid clamp. The new SM end
clamp is basically the
As a matter of course I have always run the positive and negative
conductors of high-current cable pairs together, but have never
deliberately twisted them, and have never known of any related
problems.
The most obvious example of this would be 4/0 battery/inverter
Chris,
It sounds (to me) that you are describing the bonding tooth dug through
the aluminum frame and into the glass? or at least compressed the frame
enough to break the glass? If that is the case then i'm betting that the
clamp bolt was way over-torqued.
You need to check the recommended
Besides your note that cordless impact drivers can over torque the
clamps, also they spin the bolts too fast which can lead to spalling of
the SS hardware.
We now hand torque those connects. Finally, most torque specs are for
lubricated bolts. We use anti-seize on the threads before torquing.
I think you are referring to galling, not spalling which is a concrete and rock
phenomenon.
Sincerely,
Glenn Burt
Sent from my 'smart' phone so please excuse grammar and typos.
-Original Message-
From: Ray Walters r...@solarray.com
Sent: 6/28/2015 17:27
To: RE-wrenches
Thanks Glenn. I always get those wrong.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 6/28/2015 5:15 PM, Glenn Burt wrote:
I think you are referring to galling, not spalling which is a concrete
and rock
On 6/28/2015 9:20 AM, Allan Sindelar wrote:
I'm not an EE, but I can't see what difference twisting would make in
the absence of a building/collapsing field as is normal with AC.
It is little known that with the typical inverters that use the heavy
power transformers,
have a lot of AC 120 Hz
Hi REwrenches,
Does anyone know where I can get a UL listed battery combiner good for
1500A DC, 48V, preferably with a shunt?
Does this exist?
Thanks
--
Mac Lewis
*Yo solo sé que no sé nada. -Sócrates*
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