Over Cur­rent Pro­tec­tion Steve Zim­mer­man

Passage Maker - - Contents - BY STEVE ZIM­MER­MAN

This older Grand Banks has had ex­ten­sive elec­tri­cal sys­tem up­grades. Run­ning new wires on older boats can be chal­leng­ing. The over-cur­rent pro­tec­tion has been in­stalled well: The clear acrylic cover pre­vents any­one from ac­ci­den­tally trip­ping a breaker and it pro­vides a con­ve­nient lo­ca­tion for la­bels. All wire ter­mi­na­tions have been prop­erly crimped and heat­shrink pro­tec­tion has been added. The house nega­tive bus bar of­fers a clean lowre­sis­tance con­nec­tion point for mul­ti­ple ground wires. To the left, a house pos­i­tive bus bar has been in­stalled and a pro­tec­tive cover will pre­vent any­one from ac­ci­den­tally mak­ing con­tact with a hot cir­cuit. On the far right, a Class T fuse has been in­stalled to pro­tect the in­verter wiring. Class T fuses are fast-act­ing and phys­i­cally small, while still able to han­dle higher loads from large bat­tery banks. A spare re­place­ment tie-wrapped to the wire would be a nice ad­di­tion. Blue plumb­ing lines can be seen and would be bet­ter po­si­tioned at some dis­tance from these crit­i­cal elec­tri­cal con­nec­tions to avoid any dam­age from a leak. Over­all this in­stal­la­tion has been well planned, well ex­e­cuted, and pro­vides an­other ex­am­ple of the right stuff.

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