Description

If you are wandering to detect current in the easiest way then you definitely have a current sensor. So, here is the solution for you. This Current sensor comes with good quality and you can purchase it at a reasonable price.
This is SCT 013 000 100A Non-Invasive AC Current Sensor Split Core Type Clamp Meter Sensor. SCT-013-000 is a Non-Invasive AC current sensor i.e. it is a current transformer that can be used to measure AC current up to 100 amperes.
Current transformers?(CTs) are sensors are for measuring alternating current. They are particularly useful for measuring whole building electricity consumption (or generation for that matter). The split-core type such as the SCT-013-000 CT?in the picture is particularly suitable for DIY use. Clip this?SCT 013 000 straight onto either the live or neutral wire coming into the building without having to do any high voltage electrical work.
Like any other transformer, a current transformer has a primary winding, a magnetic core, and a secondary winding. In the case of whole building monitoring the primary is the life or the neutral wire (not both) coming into the building itself and going through the hole in the CT. The secondary winding comprises many turns of fine wire housed within the casing of the transformer.
Applications

Suitable for the current measuring.
Monitoring and protection of AC motor
Lighting equipment
Air compressor

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Features :

Non-invasive current transformer
Suitable for lighting equipment, AC motors, air compressors, monitoring, current measurement, and protection
Meet UL94-V0 flame retardant properties
Two forms of output current, voltage (voltage output built-in the sampling resistor)
Non-linearity ?3%(10%-120% rated input current)
Output Plug 3.5mm

Package Includes :
1 x 100A AC Current Sensor Module.

Useful Links:

Interfacing CT Sensor to Arduino
Arduino Energy Monitor
Current Monitoring with Non-invasive AC current Transformer