Thanks everyone. @dc42 nailed it; I hadn't taken the step to measure the resistance at the probes only.
When I touch the probes together the multimeter reads 1.0ohm steadily and drops briefly to as low as 0.8ohms but won't stay there. Since the bed measures between 2.0-2.1ohms the actual resistance varies between 1.0 and 1.2ohms; I guess about where it should.
My PSU puts out 12.55V. With 1.1ohm resistance the bed will draw 11.4A when cold which is just over the 11A polyfuse fuse capacity. With 1ohm resistance the bed will draw 12.55A when cold which is over the polyfuse capacity. Would this be too much? I understand the bed will draw fewer amps when it gets warm but can the fuse handle this surge when it's cold?
When I touch the probes together the multimeter reads 1.0ohm steadily and drops briefly to as low as 0.8ohms but won't stay there. Since the bed measures between 2.0-2.1ohms the actual resistance varies between 1.0 and 1.2ohms; I guess about where it should.
My PSU puts out 12.55V. With 1.1ohm resistance the bed will draw 11.4A when cold which is just over the 11A polyfuse fuse capacity. With 1ohm resistance the bed will draw 12.55A when cold which is over the polyfuse capacity. Would this be too much? I understand the bed will draw fewer amps when it gets warm but can the fuse handle this surge when it's cold?