water immersion

  1. Solar Flare

    Can insulated copper wire handle temporary submersion?

    I had a 500' spool of insulated copper wire get submerged in a foot of still, fresh water for 48 hours (warehouse flood). Is it waterproof? Usable? Proper way to test it?
  2. M

    Horstmann Electronic 7 - Boost not working

    Hi all, As an electrically illiterate person I've found a lot of the posts on this forum helpful when fixing things round the house. I was hoping I might get some guidance on any next steps before calling someone in about our immersion heater. Context: we recently switched to a smartmeter for...
  3. G

    UK On/off peak water heater help

    Hi everyone, I’m looking for some help. I’ve just moved into a new flat that uses an economy 7 tariff. It’s all electric. I’ve never used something like this before and am very confused as to how it works and what I should do. I have 2 switches next to my water heater one that says on peak and...
  4. S

    Horstmann Economy 7 - Boost Working but when on timer no water heating overnight

    Hi there, In my apartment I have a Horstmann Economy 7 2 hour water heater system, in recent weeks it has stopped working overnight, when I wake up in the morning there is no hot water. I've checked / reset the clock to make sure its set correctly & it does seem to be turning / moving ahead as...

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