Mounting solar panel to extruded aluminum rails - best way

[sandog]

I have 4 znshine 540w bifacial panels I am looking at mounting to slotted extruded aluminum rails. I was wondering what is the best method for connecting this? In addition, the extruded aluminum will be installed perpendicularly onto two tubes of 1" stainless tubing. I was wondering if any one has a great way of connecting the extruded aluminum to the stainless pipe.

Thank you

 

[timselectric]

Would have to know the profile (shape) of the extruded aluminum. To make any suggestions.

 

[sandog]

Looking at using either 1010 or 3030

 

[timselectric]

I believe that both of those have slots for mounting hardware.
I would use angel brackets and U-bolts for mounting to the pipe. And possibly carriage bolts, washers, and nuts for the panels.

 

[Rocketman]

This was my plan when I was considering extruded aluminum…

There are bolts that fit into the slot and have the threads going up - line the bolt to where there is already a hole in the panel frame, then use a nut to tighten it down.
This assumes you can access the underside of the panel.

 

[sandog]

This was my plan when I was considering extruded aluminum…

There are bolts that fit into the slot and have the threads going up - line the bolt to where there is already a hole in the panel frame, then use a nut to tighten it down.
This assumes you can access the underside of the panel.

I, unfortunately, will not have access to the underside of the panel.

 

[Hedges]

Check the dimensions of Unirac top clamps, see if the T head can fit in your slots.
Here's one of several models.

https://www.infinigi.com/unirac-302030m-solarmount-proseries-universal-mid-clamp-3051mm-p-6548.html

Or do something similar with slot nuts, a plate over top of panel frames, and a bolt of suitable length. (for end, you'll need something that won't tilt off, possibly piece of angle aluminum or another Unirac part:

UniRac 302025C - Inverter Supply

Shop for UniRac 302025C at Inverter Supply for best prices online. UniRac 302025C, UniRac, 302025C, SM Endclamps Clear Anodized Integrated Bonding Size F For Frames 45Mm To 47Mm (Pack of 20), UniRac End Clamps

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To connect to a pipe, U-bolt grips pipe. Either bolt angle aluminum on side of rails with U-bolt through holes, or drill rails for tall U-bolt.

I've used Unirac rails with angle to mount on pipe, and another brand of channel which I drilled to fit the U-bolt.