What’s In A Picture..??
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Just from this one single picture we have:
1- A dead short circuit that caused a small gauge wire to physically melt and almost catch this boat on fire. This melt down was cause by NO OVER CURRENT PROTECTION.
2- Improper lug stacking in multiple locations.
3- Extremely poorly executed terminations.
4- Improperly wired main AC breaker. This is only breaking the HOT/BLACK wire in the 120V system. It NEEDS to break both AC HOT/BLACK and WHITE/NEUTRAL.
5- Improperly supported/non-supported terminal strip hanging by what looks to be a 16GA black wire.
6- Unused over current protection which has actually & physically been bypassed.
7- Complete and utter lack of over current protection where the wire gauges drop from 4GA to 14 to 16GA. Over current protection is NOT optional when wires change size or step-down. Most often the fuse or over current protection for the larger wire is too large for the smaller wire to handle…
8- A 4GA wire disappearing into a mess of electrical tape? What surprises is this hiding?
9- No AC/DC isolation, in the form of a cover for the AC wiring/terminals, on the back of the panel.
10- Improper use of color coding. Black DC wires connected to positive DC terminals and not marked as positive.
11- Complete lack of adequate wire support. This may be what led to the dead short that caused this melt down.
Image courtesy of B. Weinmann