ATPV 12 CAL/cm2 fall into category HRC 2 arc flash protection.
To provide adequate protection, the electrician should be protected from head to toe. The ATPV 12 CAL headkit has a clearview visor that protects from thermal effects, conductor shrapnel and blinding light generated from the arc. ATPV 12 CAL Jackets and trousers are available in only two piece. ATPV 12 CAL Gloves are designed to provide maximum dexterity so that the electrician’s work is not inhibited. 1000v boots provide the insulation for live work conditions and a bag holds all the equipment together .
To get to the ATPV 12 CAL rating, the user must perform a hazard risk assessment to determine the level of exposure and need. This task can be accomplished with the proper training and software. Professional assistance is available on request. Arc flashes occur when electricity jumps across the phases and cause a short circuit and subsequent flash. Arc flash occurrences are a factor of the distance between the phases and distance from the source ( transformer) , the circuit breakers trip time, the available short circuit current, dirt buildup in the equipment which may affect the conductive path, moisture (humidity), circuit supply voltage, amount of motor contribution during a fault, indoor versus outdoor applications and the distance of the operator from the switchgear.