230V/230V AC relay circuit - Electrical Engineering Stack Exchange

I've built a nice programmable switch basing on Raspberry and a relay board. It's fine for driving common 230V appliances but the relays seem rather flimsy; I wouldn't trust them to run 10A of curr

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230V AC Relay won't switch off - Electrical Engineering Stack Exchange

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Insert Arduino into Thermostat circuit, but no common - Electrical Engineering Stack Exchange

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HCPL-3700 voltage detector opto influencing DUT due to low input impedance. Pump float and controller - Electrical Engineering Stack Exchange