The RISC document RC62 asks installers to carefully consider the need for DC isolators. It is not unreasonable for insurers to insist that the additional risk associated with the devices is appropriately assessed. This is one of two 100Kw inverters. They are both housed in a purpose-built concrete block structure abutting a large door manufacturing plant so fire spread may be reasonably controlled. However, do we really need to have an isolator on each string. Likely done this way as it connects to the individual MPPT inputs?
