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Thanks for your kind replies They are just some questions have been thinking of over the pasty few years. I am replacing an immersion heater timer in my house, there's power to it but not from it to the heater element. Bascially the one I am looking at says it is 16 amps and 230 volts -...

One last point - what exactly does volt-free contacts mean? I am thinking it must be something to do with the switch/relays inside? How does that work then?.... :oops:

Thanks for your kind and quick reply, it is much appreciated. So basically it can be used UP TO 16 amps, and not requiring 16 amps. I thought so, just wanted to check before I buy it.

Hi all Can anyone please ask me some basic electric questions: 1) an over sized fuse is dangerous as it could cause damage to appliance(s) and fire? 2) an under sized fuse will not allow sufficient current through and will blow and appliance etc not work? 3) what are volt free...

Hi I need a new timer for my immersion heater. There is power going to it but not from it to the element. Basically my question is, I have seen a new immersion timer, and it says 16volts 230 volts. Basically my query is this: I have a 15 amp fuse in my CU supplying it, so will it be...