Recent content by Electric Yo

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    Inverter Packed up, Advise on a replacement and someone in South Wales to install please?

    Hi Deeyup, No problem, glad to help. SMA Sunnyboy is a good inverter too, so hopefully will last you a good while! Cheers, Luke
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    Inverter Packed up, Advise on a replacement and someone in South Wales to install please?

    Hi Deeyup, I work for a company called Solgen Commercial and we are ABB's main server provider for solar P.V in the UK. If you choose to go for a replacement ABB Uno then we are the company who will carry out the work. A swap takes about 30 minutes for a like for like swap. As others have...
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    Inverter Lifespan

    That is a PVI-2000 I believe? I was unaware they had a 3.6KW version? But yes your right those units have active cooling and hence are a lot smaller.
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    Inverter Lifespan

    ABB / Power One UNO's and TRIO's - 3.0, 3.6, 10.0, 12.5, 20.0, 27.6 use passive cooling - therefore no fans. The IGBT s are strapped against the heat sink and use air convection for cooling. The newer TRIO's - 20.0 and 27.6 have a small fan inside to cool a capacitor set on the A/C filter...
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    Solar system 5 years old suddenly tripping consumer unit

    If the RCD is tripping ( this protection device has a test button on it) then it could just be a case of changing it for a RCD that has a higher mA tolerance. 30MA can nuisance trip a lot on solar PV inverters. If an MCB is tripping it would be a good bet it is an internal fault in the inverter...
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    Green Neutral Insulation

    Thanks. Yeah that seems logical to me, but I can only see use for it in special circumstances. As I see it the lower the test voltage you can use to confidently prove a cable the better. As we all know the higher the voltage used the more dangerous it can be if something should go wrong...
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    Green Neutral Insulation

    Well for a 230V circuit, 500V. Ol Bristolian is my favourite =)
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    Green Neutral Insulation

    Tis true, cider is plentiful here =). Sry I just get a bit pi**ed when people act like a douche for no reason.
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    Green Neutral Insulation

    That the cable has a maximun rating of 600V between Live/Earth and 1000v between Live conductors. What's your point? No need for sarcasm.
  10. E

    Green Neutral Insulation

    No need to be so hostile dude, chill. Yes the cable is rated up to 1000v, but that just tells you limit of the insulations properties, right? My thinking is that if the circuit operates at 325v max, then 500v is closer to that voltage than 1000v, therefore would give a more realistic reading...
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    Green Neutral Insulation

    I agree, but why do a 1000V ins res test?? In my opinion a 500V ins res would give more realistic results. I don't even know in what situations you would use the 1000V ins res test. To the OP, I've have never seen a conductor change colour like this. So can't give any suggestions. Heat would be...
  12. E

    30mA RCD requirement?

    Good point and since it's an older install I won't argue that their will be an increased likelihood of nuisance tripping. Actually think there is regs against one 30ma rcd protecting the whole install. My bad. I don't like these old 3036 consumer units, make's everything more difficult. =) I...
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    30mA RCD requirement?

    Why not replace the 100ma RCD with a 30ma RCD and give the whole distribution board 30ma protection? Then you've killed 12 birds with 1 stone =). Correct me if I'm missing the point here.
  14. E

    Adiabatic equation

    Zs=0.04Ω V= 230V 230/0.04= 5750A ----------------- I=5750A T= 0.025s (Read this from you post, also agrees with regs) K=115 S = √((5750²)x0.025) ----------------- 115 S= 7.906 mm² So with a 10mm² you will be oversized by 21%...
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    Advice needed

    Did you take an educated guess of the cable size required or did you figure it out? You could easily prove his error in thinking you need 6mm2 by showing him the current carrying capacity's in the regs. I agree with these guys, you should have stood your ground and defended your decision. If...
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