The 2017 Handbook exhibit 514.4 shows sealoff locations at the gasoline dispensers, and inside at the panelboard.
It also shows a wireway between the indoor sealoffs and the panelboard, but it doesn't mention why the wireway is shown in the diagram.
Looking at a cutsheet that shows wiring for dispensing equipment, it also shows the same wireway between the indoor panelboard and the indoor sealoffs.
Also, an actual existing installation I just looked at also had the same wireway installed inside at the panelboard, above the sealoffs and above where the conduits went underground.
Is there a reason this wireway is needed?
It also shows a wireway between the indoor sealoffs and the panelboard, but it doesn't mention why the wireway is shown in the diagram.
Looking at a cutsheet that shows wiring for dispensing equipment, it also shows the same wireway between the indoor panelboard and the indoor sealoffs.
Also, an actual existing installation I just looked at also had the same wireway installed inside at the panelboard, above the sealoffs and above where the conduits went underground.
Is there a reason this wireway is needed?