What type of relay should i use to control a water pump (with a raspberry pi)?
Besides being an inductive load, an AC motor is also a load that requires a high current during starting. The start time for a small motor will probably be one second or less. In the USA and Canada, motors are usually rated in horsepower and suitable relays have a horsepower rating. Any relay that does not have a horsepower rating is probably not suitable. Elsewhere in the world, motors are rated in kW and suitable relays have a different rating system. If you need that search for IEC relay ratings.

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