Re: Wind Solar unreliable compared to Gas Coal Nuclear

"Scout"  wrote in message news:[email protected]...
"Jim Wilkins" <[email protected]> wrote in message

Why would you mount your inverter on the battery box?
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Because having two large heavy items joined only by cables invites excessive 
strains on the cable connections. If the inverter is on the box lid (or 
side) the heavy cables are short, the battery terminals still accessible, 
and the combination can be carried as a unit. The battery is in an enclosure 
designed to be safe for it. The inverter has airflow access all around, 
which it might not if on the side and pushed against a wall. A charger and 
PWM controller could go on the exposed side but still need some airflow.

http://assets.bluesea.com/files/resources/reference/2010_ABYCexcerpts.pdf
The 7" lead rule allows an in-line fuseholder made with a loop of cable to 
reach from a terminal to outside the box, where it shouldn't ignite hydrogen 
if the fuse blows violently and the cap isn't on. The most likely battery 
short is from the wrench when tightening the nuts on the inverter studs. The 
fuse can be removed as a safety disconnect.

Packaging concerns like this tend to be ignored by designers without much 
practical experience. For a homeowner wood is the only readily available and 
easily worked structural material, but it's a fire hazard around high 
powered electricity. Sheet metal requires different equipment and skills. 
When I started Transite was the temperature resistant electrical insulator 
with decent structural strength, then asbestos was banned and nothing has 
fully replaced it. Glass-epoxy circuit board chars and becomes conductive if 
overheated. The Teflon equivalent I used for microwave radio isn't as rigid. 
I've repaired an expensive custom circuit board with a blackened hole where 
the main chip used to be.
https://www.adafruit.com/product/1281?gad_source=1
ZIF test sockets are available molded from higher temperature material than 
standard sockets.

I've been using the handrail and exterior column steel from a scrapped 
outdoor pool for projects, it's 22 ga galvanized and extremely durable 
outdoors. However I have an anvil to straighten and flatten it, a large 
metal shear and a corner notcher to cut it and a press brake to bend it. I 
think I was chosen over other techs to build many prototype projects because 
my results could look like commercial products instead of being tacked to a 
Bud chassis.