Water Heater question, Safety installation with RCCB
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 Oct 16 2022, 10:55 AM
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#1
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Senior Member
4,950 posts Joined: Jul 2010  
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Since it's not functioning normally, just replace it.
I once tried to relocate my 6-year-old heater. The interior circuit board looked "charred" a bit, so I threw it away. Can't imagine the condition of yours which is easily 25 years old. |
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Oct 19 2022, 01:16 PM
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#2
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Senior Member
4,950 posts Joined: Jul 2010
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QUOTE(ceo684 @ Oct 16 2022, 04:39 PM) 3.0 At the DB box - change the mains RCD (the one for whole house) to 30mA. This is 2nd line of defence. In case the 10mA failed to trip - the 30mA will catch it and trip (like a fail safe). If your 10mA failed, and whole house one is 100mA or 300mA which I suspect is the case - there is no backup - GG.com because >50mA leak thru human body, sayonara. Thank you sharing knowledge.Why so many upgrades? RCD also wears out after 30 years.. springs get weak  May I know: 1) why ST allows 100mA main RCD (or even 300mA as I saw in some houses) when >50mA leakage is fatal? 2) when RCD ages, as in spring weakens, will it be easier to fail safe (trip off) or it doesn't trip easily? I'm thinking that if it's the former, it's safer albeit mote troublesome. |
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