On Saturday, January 30, 2016 at 11:51:50 AM UTC-5, JS wrote:

Measuring voltage with no load can be deceiving.
Wondering if the tinned wires are used in crimp or screw terminal connections, as opposed to tinned prior to solder connections. Tinned wire in a crimp or terminal strip in my experience is a recipe for future looseness.
Jim


Solid or "semi-solid" wire should NOT be used in a crimp connector, none I have ever seen are rated/recommended for these wires.
If you just crimp, you will have issues.
If you crimp AND solder, then you will be fine.
Solder (on any kind of wire) for the electrical connection in a crimp connector is the best way to go. The crimp is the mechanical connection while the solder is the electrical connection.

[Semi-solid wire is a stranded wire with a "tin" overcoat holding the strands together as opposed to stranded tin coated wire which is fine in a crimp connector.]