PV Diverters alternative

[JohnMo]

27 minutes ago, Mattg4321 said:

upon further investigation, that’s designed to be fitted inside an enclosure with a DIN rail

That's one of the mounting methods. They supply other fixings

 

Will get the mechanical protection sorted.

 

29 minutes ago, Mattg4321 said:

Also, those exposed live terminal screws are a potential danger. 

 

They are quite deep down, but again will get that issue fixed at the same time.

 

Job for tomorrow.

[G and J]

Methinks reading the above that for us there’s not a clear justification for a solar diverter day one, but like a battery, I will cost up making allowance for one in the future.  
 

Clearly the diverter needs a direct connection (16A?) to the immersion element, and a supply connection but what other connections does it need?  Is it a wireless or Ethernet to another element like the inverter?  I don’t think anything but the inverter could know when excess solar is available and exactly how much.

 

Are diverter typically mounted next to the inverter or the immersion?  

[JohnMo]

5 minutes ago, G and J said:

diverter typically mounted next to the inverter or the immersion?  

Generally near consumer unit, as they use a CT clamp on the incoming main power from the meter to detect electricity flow direction. The inverter (unless G99 with CT clamp conneected) has no idea where the electric goes.

 

Diverter would normally go in-between the CU and the isolation switch for the immersion.

 

If you get paid for export, why bother heating water, when a heat pump can heat it at a cop of 3 to 3.5. Just take the export money. Some diverters are silly money.

[G and J]

8 minutes ago, JohnMo said:

Generally near consumer unit, as they use a CT clamp on the incoming main power from the meter to detect electricity flow direction. The inverter (unless G99 with CT clamp conneected) has no idea where the electric goes.

 

Diverter would normally go in-between the CU and the isolation switch for the immersion.

Noted.  Thank you. 

[G and J]

9 minutes ago, JohnMo said:

If you get paid for export, why bother heating water, when a heat pump can heat it at a cop of 3 to 3.5. Just take the export money. Some diverters are silly money.

This is part of the rationale for not having one to start with.  Especially if, as it appears, it costs nothing but a bit of wall space to allow for it to be fitted in future.  Again, thank you. 

[JohnMo]

On 05/11/2024 at 12:03, sgt_woulds said:

Are those single-insulated tails?  (Blue and Brown cables)  If so, they need additional mechanical protection to comply with wiring regs.  

 

13 hours ago, Mattg4321 said:

Exposed basic insulation (brown and blue). Needs mechanical protection as above. Also, those exposed live terminal screws are a potential danger. 

Should all be sorted now.

 

Mechanical protection added to front and sides of the brown and blue tail.

 

Terminal screw points blocked off with removable plugs.

 

Solution keeps plenty of cooling effect around the relay. Cupboard used as an MVHR through space to plant/storage room above which has an MVHR extract