[RE-wrenches] question about pole mount interconnection

[Hilton Dier III]

We just did a 4 pole installation using DPW top-of-pole mounts. We used 
Teck-90 armored watertight cable between the poles and from the poles to 
the house. The Teck-90 spiral wound metal flex conduit with an 
everything-resistant black sheath on it pre-stuffed with just about any 
combo of wires you might want. We cast 2" PVC sweeps into the 36" dia. 
sonotubes so the cable could enter underground and come up next to the 
pole. We put PVC end caps on the tops of the sweeps with cable holes in 
them, just for neatness.

Teck-90 is a revelation. We laid out and buried a double run of 100 feet 
of the stuff in the time it took the excavator to go along the trench. 
He never got out of the cab. We get it on a 500' spool and mount the 
spool in the back of a pickup. Then we just run off however much we 
need, cut it to length, and throw dirt on it.

We got it from Graybar for slightly less than the price per foot of the 
equivalent wire and PVC conduit. I had been meaning to write a post on 
here about it.

We also just did PV on a barn roof and did the 
spool-it-off-and-clip-it-up routine. Made the run from the roof to the 
inverter on the north side first floor in about 40 minutes. No conduit 
bending. The end connectors are kind of pricey, but the time saved is huge.

Hilton

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Hilton Dier III
Renewable Energy Design
Partner, Solar Gain LLC
453 East Hill Rd.
Middlesex, VT 05602