Great that you are highlighting the requirement for coordination. Installing the SPD in a separate enclosure is the best way to ensure this and to get around the restrictive BEMA clauses. Most CU manufacturers do not make their own SPD's and therefore do not have access to a full suite of devices for DC, PV type 2, type 3, data etc. so it's important to have a specialist manufacturer of niche devices like this.
Great that you are highlighting the requirement for coordination. Installing the SPD in a separate enclosure is the best way to ensure this and to get around the restrictive BEMA clauses. Most CU manufacturers do not make their own SPD's and therefore do not have access to a full suite of devices for DC, PV type 2, type 3, data etc. so it's important to have a specialist manufacturer of niche devices like this.