If the power source is a listed Class 2 transformer or listed Class 2 power supply — or it’s in listed equipment marked to identify the Class 2 power source — you’ve got a Class 2 circuit between the ...

CRISPR–Cas is a bacterial defense system against phage infection and nucleic acid invasion. Class 2 type II CRISPR–Cas9 has also been widely used for genome engineering. Here, we review novel insights ...

Courtesy of www.MikeHolt.com. Based on the 2020 NEC. Class 2 circuits are limited to voltage and current values that don’t (usually) present a shock or fire hazard. The power supply for a Class 2 ...