Sanyo panel short MC wires [RE-wrenches]

[Sky Sims]

Have a system on my roof that I let the wires hang so I can see if they ever rub bare. Been up about 10 years now and I don't see any indications of wear other than perhaps the color is a bit faded.
These panels are also not secured by anything other than their own weight. They are at a 10 degree tilt on a nearly flat roof and haven't budged yet. They've seen gusts up to 80mph.
May be someday the wind will throw them off the roof but my math says no. Total system weight 4.5 pounds per square foot. 
 
I like to test all kinds of scenarios at my place,
Sky Sims
Ecological Systems
http://www.ecologicalsystems.biz <http://www.ecologicalsystems.biz/> 
220 County Road 522
Manalapan, NJ 07726
732-462-3858  fax)732-462-3962  cell)732-618-7140

________________________________

From: troy [mailto:taharvey at heliocentric.org]
Sent: Fri 2/1/2008 6:45 PM
To: RE-wrenches at topica.com
Subject: Sanyo panel short MC wires [RE-wrenches]




I'm mounting Sanyo HIP panels horizontally on Horizontal roof rails 
(unirac sunframe). I found that Sanyo panels do not have enough wire 
length to be pulled to the side rails and tied down. There is just 
enough wire to connect the panels plus a couple of inches. The panels 
do not have a curl under frame, so there aren't any mounting locations 
on panels to place a clip or strain relief.  I have not found a 
reasonable solution other than to let the MCs dangle down onto the 
roof - which makes me uncomfortable, not what I feel is "best practice".

Has anyone else dealt with this? Has anyone seen issues with MCs 
rubbing on rooftops due to wind or ice issues that has caused issues 
over time.



Troy Harvey
---------------------
Heliocentric
801-453-9434
taharvey at heliocentric.org


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