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 Electrical Refit Part IV: Inverter		  New Topic  Topic Locked
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bjoye
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USA
105 Posts
Initially Posted - 04/17/2017 :  11:03:01  Show Profile
At the last minute, Defender had sale on inverters and I thought, “Why Not?” Its a Xantrex ProWatt SW 600 Power Inverter: true sin wave, 2 outlets, digital voltmeter, USB port. My current spec barely meets the minimum requirements: 100Ah, 4 AWG (or very short 6 AWG) cable. Its mounted under the stairs, convenient to the cabin. It is independent of AC system and directly wired to the house battery.


I did a smoke test and starting at 100% SOC on the house battery, it will run a small shop vac for a minute before the voltage drops too low and the inverter shuts down to protect the battery. The purpose of installing the inverter is not to run a toaster or microwave, but to provide that “I MUST CHARGE MY (insert here: laptop, cordless drill, etc) RIGHT NOW” with no access to shore power.

If designing from the start with unlimited funds, I would have gone with a house battery bank of 2 6V GC2 225Ah batteries in the box, a small starter battery next to it, and 4 or 2 AWG cables. I would need a 20 amp battery changer (4 phase) and external bipolar ACR. Cost of the current setup (2 75Ah WM group 24: $320, charger/ACR $170 = $490). Cost of new setup (2 6V GC2 WM $500, WM starter battery $100, 20 amp charger ~$300, ACR $80= ~$1000) or x2 the current setup. Not sure if it would be worth it.
"Frayed Knot" 1989 C-25 WK/SR #5878

Akenumber
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USA
247 Posts
Response Posted - 04/17/2017 :  17:06:47  Show Profile
I bet it nice to have clean power on the boat after going without for so long. Mine could use a little updating and cleaning up. Nice job.
Ken
San Diego
84 C25 SR/FK 4116
The KRAKEN
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.