Dock electrical panels

[OldCity]

I found seemingly homemade electrical panels, 16 of them, at a condo's 32 slip marina/dock. They seem to be the interiors of Square D 12 space panels installed in PVC boxes with hinged covers and gaskets. Everything I've been taught says UL listings are required and homemade versions like this are unacceptable but I'm having trouble finding a code reference.
There have been several issues found on this marina from no GFPE protection, undersized wire for voltage drop and wrong types of cables on the floating sections, so it seems the original electrician didn't put too much thought into it.

This work was done years ago but never received a final inspection. Original EC was paid and gone

 

[don_resqcapt19]

The cabinet that a panelboard is installed in is covered in Article 312 and is not required to be a listed product.

Panelboard.
A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet, enclosure, or cutout box placed in or against a wall, partition, or other support; and accessible only from the front. (CMP-9)

However for your application, I would prefer a complete listed assembly, but I don't think the code actually requires that.

 

[roger]

I found seemingly homemade electrical panels, 16 of them, at a condo's 32 slip marina/dock. They seem to be the interiors of Square D 12 space panels installed in PVC boxes with hinged covers and gaskets. Everything I've been taught says UL listings are required and homemade versions like this are unacceptable but I'm having trouble finding a code reference.
There have been several issues found on this marina from no GFPE protection, undersized wire for voltage drop and wrong types of cables on the floating sections, so it seems the original electrician didn't put too much thought into it.

This work was done years ago but never received a final inspection. Original EC was paid and gone

I remember installing non metallic SQ D QO load centers in Chlorine pool environments in the 80's

 

[steve66]

Fiberglass enclosures are available for SQD NQ Panels, so it might not be "homemade":

https://www.productinfo.schneider-electric.com/1640ct0801nqcbpanelboards/1640ct0801-nq-circuit-breaker-panelboards-catalog/1640CT0801%20NQ%20Circuit%20Breaker%20Panelboards%20Catalog/en/1640CT0801%20(bookmap)_0000205119.xml/$/Enclosures-85A2A3D3#Corrosion-ResistantFiberglass-Reinf-85A2C62B2