Contactor stopped working

xodosman123 said:
I am really confused as to why this was used.
Click to expand...
He wants to use the contactor with the sonoff wireless unit. To control it remotely and schedule running times. If I'm correct.
I'm actually thinking of doing the same thing. Interesting project.
 
xodosman123 said:
I am really confused as to why this was used.
Click to expand...
The ultimate goal was to wireless control the geyser timer.

As Sonoff devices are rated 10A and the geyser can pull up between 13A- 15A for a 3kw geyser, the goal was to use the sonoff to trigger the contactor which will turn the geyser on.

This was the safest way that I could think of doing it unless someone has another suggestion to get wireless control of the geyser?

I already considered the Sonoff Pow R2(16A) but too many horror stories of this burning
 
gertvanjoe said:
The coil is rated at a certain voltage. So by nature, the Sonoff is made to control mains connected stuff up to a certain wattage. If you exceed this wattage, contacts going to burn. But just installing a better relay (contactor) that can be controlled from the output of the Sonoff, makes that the Sonoff contacts won't burn as the only load on it is the coil (which now has to be able to take 220V ac)
Click to expand...
Exactly my thought process
 
Arthur said:
:eek: Really? I recently installed a POWR2 in the ceiling to remotely manage a heatpump. Pulls about 12A max. Is that a problem?
Click to expand...
Well the powr is rated at 16A max. So would say derate it to a working current of abot 14. Your close nut I think you are ok
 
gertvanjoe said:
Well the powr is rated at 16A max. So would say derate it to a working current of abot 14. Your close nut I think you are ok
Click to expand...
Interestingly from the strip down of the POW R2, the internal relay is actually only 15A

From manufacturers website:
Sonoff Pow R2 is a 15A WiFi smart light switch that allows you to remotely manage and control your appliances and monitor your home energy usage.

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SONOFF POW Origin Smart Power Meter Switch( POWR2 Upgrade Version)

【Power Metering】Track of power, current, voltage, and cumulative power consumption of your appliances in real-time. 【16A】Support maximum 16A load, compatible with more home appliances. 【6-Month Con…
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Dee96 said:
The ultimate goal was to wireless control the geyser timer.

As Sonoff devices are rated 10A and the geyser can pull up between 13A- 15A for a 3kw geyser, the goal was to use the sonoff to trigger the contactor which will turn the geyser on.

This was the safest way that I could think of doing it unless someone has another suggestion to get wireless control of the geyser?

I already considered the Sonoff Pow R2(16A) but too many horror stories of this burning
Click to expand...
Really open to suggestions guys
 
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