CT clamp sizing and accuracy


#1

I accidentally ordered the 200-amp clamps for my 100-amp service panel. Is my accuracy going to suffer significantly to the point where it’s worth ordering the 100-amp clamps, or should I just install the 200-amp clamps? I had read somewhere you should use the smallest clamps that meet your amperage. Just looking for opinions. Thanks.


#2

The 200 Amp CTs will work fine. The most significant impact was on your pocketbook.