[RE-wrenches] Rooftop wiring methods between multiple subarrays

[R Ray Walters]

EMT needs to be "pickled"  with vinegar or acid, to get the paint to  
hold. I love it for inland work, but near the ocean, it'll rust  
through in 5 years. I'm not sure how much more time paint would buy you.
Anybody use other plastic materials HDPE? Supposed to not have the  
expansion problems of PVC.


R. Walters
ray at solarray.com
Solar Engineer


>
> If you have to run around the roof with EMT, you can protect it from  
> rust
> with a coat of paint.
>
> Regards,
> -Hans
>

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