Does it matter where the Inverter is to be sited?

• • #16859 Reply
    
    John

    Guest

    Does it matter more for the Inverter to be sited nearer the solar panels having a shorter D.C. run? OR Is it better for the Inverter to be sited nearer the consumer unit having a shorter A.C. run?

  • #16860 Reply
    
    Norfolk Solar

    Guest

    Hi John

    I think most installers try to keep the DC run as short as possible, but there is nothing wrong in a long DC run if you have no choice. If the DC run is that long they should do the calculations and use the correct size DC cable.

  • #16861 Reply
    
    Norman

    Guest

    Hi John.

    “2.1.4.2 Cable Type and Installation Method
    To minimise the risk of faults, PV D.C. cable runs should be kept as short as practicable.”

    Source: MCS Guide to the Installation of Photovoltaic Systems 2013.

    You can download a .pdf copy for free here:

    https://www.microgenerationcertification.org/mcs-standards/mcs-standards

  • #17692 Reply
    
    P Wilson

    Guest

    is it ok in loft/roof space or is this likely to be too hot?

  • #17693 Reply
    
    Stuart

    Guest

    Hi

    The loft space is actually the most popular place to install the inverted box. This has the benefit of a short DC cable run and minimum installation disruption within the living spaces of the property.

    I’ve never heard of temperature being a factor for the inverter, but cooler panels do work more efficiently (contrary to popular belief).