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Off grid inverter issue
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<blockquote data-quote="binky" data-source="post: 552589" data-attributes="member: 490"><p>changing MCBs for larger ones is a bad idea, unless you know the cable is man enough to take the higher ampage, you are risking the cable burning out and causing a fire. A quick look at manuals for these two inverters suggests you have changed from 4kw to 5 kw, 5 kw is roughly 20Amps, so it sounds like the new unit is overloading the MCB and possibly the cable. 2.5mm cable will run upto 26Amps, 4mm 32 Amps, 6mm 46Amps or there abouts, dependent on installation method. We derate cables if run through insulation, grouped together and long list of other things.</p><p></p><p>It also sounds like you possibly have an issue with the pump, which is not unusual, as per Chewies' post, I would have that on it's own RCBO.</p></blockquote><p></p>
[QUOTE="binky, post: 552589, member: 490"] changing MCBs for larger ones is a bad idea, unless you know the cable is man enough to take the higher ampage, you are risking the cable burning out and causing a fire. A quick look at manuals for these two inverters suggests you have changed from 4kw to 5 kw, 5 kw is roughly 20Amps, so it sounds like the new unit is overloading the MCB and possibly the cable. 2.5mm cable will run upto 26Amps, 4mm 32 Amps, 6mm 46Amps or there abouts, dependent on installation method. We derate cables if run through insulation, grouped together and long list of other things. It also sounds like you possibly have an issue with the pump, which is not unusual, as per Chewies' post, I would have that on it's own RCBO. [/QUOTE]
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