Understand the CAT Safety Categories

CAT I: Applicable to environments with secondary circuits and low voltage, where electronic equipment is protected. In this case, measurement tools are used for analyzing electronic devices.

CAT II: Applied to environments with loads connected to single-phase circuits, such as household appliances and portable tools. This category is most relevant to residential distribution.

CAT III: Applicable to environments with three-phase distribution, which includes single-phase commercial lighting. This category relates to equipment and installations in fixed locations, such as multi-phase motors, photovoltaic systems, and industrial facilities.

CAT IV: Applied to three-phase environments for connecting to public supply services, external conductors, electricity meters, and service entrance points.

Fluke tools are some of the most reliable in the world and include CAT ratings to keep you safe. See below:

For Residential Electricians or Maintenance Troubleshooting
In commercial and residential applications, troubleshooting and maintenance requiring basic voltage and continuity measurements, you’ll need a compact, versatile multimeter like the Fluke 11 with CAT III 600V.

For Electricians Working in Environments Up to 1,500 V
For work on solar panels, wind power, electric railways, battery banks, or any environment up to 1,500V, the Fluke 393 clamp meter is ideal, with CAT IV 600V and CAT III 1500V ratings.

For Residential Electricians or Maintenance Troubleshooting
For all types of work where you need to measure voltage and current simultaneously and without contact, the Fluke 377 FC clamp meter with FieldSense™ technology is perfect. It also features a power quality indicator to detect any issues with the power source or connected equipment, with a CAT IV 600 V safety rating.

Contact our team to request a quote.
Source: Exclusive content from Fluke Networks.