Qualified sparks fitted Grasslin timer a few years ago. It stopped working and taking it apart revealed that its innards had melted. Sent it to Grasslin for comment and they diagnosed loose live feed, confirmed by discolouring of multistrand flex. Ferrules should have been fitted Would it be smart to rewire immersion heater and, if so, with what gauge? Thanks in advance for all advice.
The helpful Mike at Grasslin explained that over time multistrand compresses and works loose, even if a tight fit was achieved on fitting. Grasslin supply ferrules with the timer. Anyone else come across this? Thanks Seneca for the spec - for clarity, are you saying use that cable from swith to timer and from timer to immersion?
Don't tin, (solder) the ends of flex because the solder "gives" after a while making the connection loose.
Wrong! Solder should only be used for connections designed for soldering. On screw terminals as Seneca said the solder gives due to the flux collapsing. As this happens the connection gets hot which accelerates the flux collapse making the connection even worse and hotter. This can result in burnt connections leading to fire. Don't do it. Use ferrules! Kind regards
Forums
Facebook
Twitter
You Tube
Instagram
Shop