You can get the Trina 435 glass glass from rexel, but the Voc is so high you nearly need to wire in parallel. Question, do you need to earth your rails for the now required insulation resistance roof tests?
Trina is well stocked in most places the issue was these panels were 5mm smaller than current options and now obsolete. Rails can be earthed and we should always be doing IR regardless of that. Thanks
The optimisers were used to bring one of the existing panels into the new array. Otherwise the different outputs of the panels can affect the performance of the array. This dropped the voltage of the existing array into limits on the inverter.
Hi, great explanation and install. Can i ask a question please as you said something that ive never heard before. I am in the process of choosing an install and im getting a 6.9kw array east facing and a 9.5 kw battery Give Energy. My question is would a Give energy 5kw invertor be ok as thats my preference, but the installer is telling me its under rated and i should have a 6-7kw invertor. They have said i will lose too much performance in June & July. But you said that the invertor can take in upto 7kw in DC. So am i right in thinking if there is battery space and the house is using 3kw then upto 4 kw could still go into the battery? But if im using 7kw in the house only 5kw could be used from solar? And once the battery is full a max of 5kw can be utilised for house or export? Its so confusing for a novice like me, and i dont want to make a mistake with my choices. Thanks
You are pretty much there tbh mate. Yep the GivEnergy hybrid can only ever output a max of 5kW be that to house loads or to export. But it can take up to 7.5kW of PV input and use that extra 2.5kW (or more depending on what house loads you have at that time) into the battery. If the battery is full it’s clipped away. It would depend on your usage and consumption to decide if it’s workable or not. Also worth remembering the output of your array is based on standard test conditions so at times it will go above 6.9kW but those occasions would be limited to cool but bright days (PV performs better in colder temps). If it was me I would cover it off with a bigger inverter but it does depend on the above points
@@electrician247 Hi, just to clarify the system size is 6.9kw 16x430 panels, but the Estimated annual output (kWp x Kk x SF) is 5,043, does that make any difference? Cheers
@@electrician247 that inverter can deal with 5kW to the house/Grid & up to 3.3 kW to the Battery (total of 8.3kW) not 7.5kW. Each string can cope with up to 7.5kW PV on the Gen3, voltage dependant on the panels not maxing out 600V (with an obvious reserve for the cold weather voltage spikes).
Interested in that the warranty expiry date in 2029, not 2036. I thought these were all 12 years now if the commissioning and user agreements were signed. Something to chase up.
You can get the Trina 435 glass glass from rexel, but the Voc is so high you nearly need to wire in parallel. Question, do you need to earth your rails for the now required insulation resistance roof tests?
Trina is well stocked in most places the issue was these panels were 5mm smaller than current options and now obsolete.
Rails can be earthed and we should always be doing IR regardless of that. Thanks
Could you explain more about how you used an optimisors to help with overloading the mppt please
The optimisers were used to bring one of the existing panels into the new array. Otherwise the different outputs of the panels can affect the performance of the array. This dropped the voltage of the existing array into limits on the inverter.
@@electrician247 makes perfect sense now.
How many panels could be installed to a 5kw inverter, to max it out?
@@adamwoodall9506 depends on the inverter, orientation and battery attached.
Hi, great explanation and install. Can i ask a question please as you said something that ive never heard before. I am in the process of choosing an install and im getting a 6.9kw array east facing and a 9.5 kw battery Give Energy. My question is would a Give energy 5kw invertor be ok as thats my preference, but the installer is telling me its under rated and i should have a 6-7kw invertor. They have said i will lose too much performance in June & July. But you said that the invertor can take in upto 7kw in DC. So am i right in thinking if there is battery space and the house is using 3kw then upto 4 kw could still go into the battery? But if im using 7kw in the house only 5kw could be used from solar? And once the battery is full a max of 5kw can be utilised for house or export? Its so confusing for a novice like me, and i dont want to make a mistake with my choices. Thanks
You are pretty much there tbh mate. Yep the GivEnergy hybrid can only ever output a max of 5kW be that to house loads or to export. But it can take up to 7.5kW of PV input and use that extra 2.5kW (or more depending on what house loads you have at that time) into the battery. If the battery is full it’s clipped away.
It would depend on your usage and consumption to decide if it’s workable or not. Also worth remembering the output of your array is based on standard test conditions so at times it will go above 6.9kW but those occasions would be limited to cool but bright days (PV performs better in colder temps).
If it was me I would cover it off with a bigger inverter but it does depend on the above points
@@electrician247 Many thanks for the reply.
@@electrician247 Hi, just to clarify the system size is 6.9kw 16x430 panels, but the Estimated annual output (kWp x Kk x SF) is 5,043, does that make any difference? Cheers
@@gregcarnall9097 not really. It’s all about the peak generation and what you consume day to day. I would take advice from your installer.
@@electrician247 that inverter can deal with 5kW to the house/Grid & up to 3.3 kW to the Battery (total of 8.3kW) not 7.5kW. Each string can cope with up to 7.5kW PV on the Gen3, voltage dependant on the panels not maxing out 600V (with an obvious reserve for the cold weather voltage spikes).
Interested in that the warranty expiry date in 2029, not 2036. I thought these were all 12 years now if the commissioning and user agreements were signed.
Something to chase up.
It changes once they review it. Normally takes 3 weeks ish.
I didn’t know that the all in one unit could be expanded?
This isn’t an all in one but…. It’s in beta testing right now for additional AIo