This non-invasive current sensor clamped around the supply line can measure a load up to 100 Amps, and allow you to calculate how much current pass through it. It can be useful for building your own energy monitor or for building an over-current protection device for an AC load.
Current transformers (CTs) are sensors that are used 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 CT in the picture above, is particularly suitable for DIY use it can be clipped straight on to either the live or neutral wire coming into the building without having to do any high voltage electrical work.
Model:SCT-013-000
Rated input: 0-100A
Rated output: 0-50mA
Accuracy: ±1%
Linearity: =0.2%
Turns ratio: 1:1800
Work voltage: 660V
Work frequency: 50-1KHz
Operating temperature: -25..+70?
Storage temperature: -40..+85?
Dielectric strength: 3KV
Fire resistance: UL94-V0
Material of core: Ferrite
Weight: 55g