Came across this on a farm. What're your thoughts other than compression connections are suggested. More often than not Im seeing contractors use whatever they can to connect to the transformer. Usually, these systems are maxed out and pumping power back to the grid through this connection for 9-12 hours a day.
Thoughts
- Thread starter dontknow
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electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
Lugs and spades have nema bolt patterns, they like being together 
. What issue do you have with that installation?
. What issue do you have with that installation?Carultch
Senior Member
- Location
- Massachusetts
One issue I'm seeing, is that the surface of the lugs is not entirely in contact with the transformer stabs. There is about a 1" overhang beyond the transformer stab. The listing of the lugs is likely based on the lug being in contact completely with the busbar.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
Yeah I don't like how they are hanging off the spades
- Location
- Illinois
- Occupation
- retired electrician
I prefer the wire connections to be as close to where the bushing leaves the transformer. I don't like to see the leverage placed on the bushing by putting the conductors out at the end.
I also don't like the lugs hanging over the bus.
I also don't like the lugs hanging over the bus.
Carultch
Senior Member
- Location
- Massachusetts
That's a good point too. Bear in mind that it is common to build the secondary stabs with insulated support hangers from the ceiling of the cabinet. This image shows black rods with female threads holding the threaded support rods, that serve this purpose. This relieves the bushing of all that leverage from the weight of the cables.
- Location
- Illinois
- Occupation
- retired electrician
I did not catch that, and have never seen that in the field. Thanks.
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