I think it would look better if there was a bit of blue wire in the end slot. How close is the TNC-s bond - more than a meter or so round trip and I'd say it is not safe to assume that they are at the same voltage for the sort of short duration very high current transient these devices are supposed to address.
I think it would look better if there was a bit of blue wire in the end slot. How close is the TNC-s bond - more than a meter or so round trip and I'd say it is not safe to assume that they are at the same voltage for the sort of short duration very high current transient these devices are supposed to address.