Can anyone point to any code issues with mounting an Envoy inside of a panelboard? For example, when installing a 3-phase commercial system with a large 400A AC combiner panelboard, there is often PLENTY of room to mount an Envoy inside on a DIN rail. Aside from the manufacturer's instructions not specifically listing this option, I can't see any reason that it would be prohibited. The only downside I can see would be slightly more difficult access to service buttons.
I would argue that it is better. The DIN rail would be bonded to the enclosure. The DIN rail that Enphase ships with the Envoy is too short to accept a DIN mounted grounding terminal. When mounting in a non-metallic enclosure I run an EGC to a grounding terminal on a longer DIN rail that I install, not the included one. I'm wondering how people handle the lack of a ground terminal on the Envoy and whether they even run an EGC along with the circuit conductors when mounting an Envoy in a non-metallic enclosure. I have not been able to get a good answer from Enphase on how they expect this to be accomplished. I suppose if the Envoy does not need an equipment ground because it is insulated, and the DIN rail is not exposed once the Envoy is mounted. Maybe it is their opinion that no EGC is required, but I see the DIN rail as needing an EGC. Anyway, that's a lengthy side note. I'm mainly wondering if the Envoy can be mounted in a panelboard. Jason Szumlanski
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