We're about to lose our gas boiler during 3 months of building work. Which mean for hot water we'll have to use the immersion heater that we have never used other than the occasional test. It has not timer (not a problem when we were not using it!). So, I'm gonna get the builder's 'lectrician to fit a simple timer, but at the same time, why not add a parallel module so I can add it to Cortex....
Question is: the immersion is rated around 3Kw, so around 12.5A @ 240v. I dont think there are any Idratek modules with relays rated above 13A ...?
If so, what solutions have people used, if indeed anyone else has hooked the immersion up.
A simple option would be a relay unit energising another relay that is higher rated but that seems wasteful to have 2 relays energised.
Next up, would be a digital output with some drive circuitry (aka transistor & resistor(s) probably) to drive higher rated relay. Would be my preference over the previous.
Any other suggestions / precedence?
jon
Question is: the immersion is rated around 3Kw, so around 12.5A @ 240v. I dont think there are any Idratek modules with relays rated above 13A ...?
If so, what solutions have people used, if indeed anyone else has hooked the immersion up.
A simple option would be a relay unit energising another relay that is higher rated but that seems wasteful to have 2 relays energised.
Next up, would be a digital output with some drive circuitry (aka transistor & resistor(s) probably) to drive higher rated relay. Would be my preference over the previous.
Any other suggestions / precedence?
jon
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