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Old 11-15-2011, 11:54 AM   #25 (permalink)
bwilson4web
Engineering first
 
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Join Date: Mar 2009
Location: Huntsville, AL
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17 i3-REx - '14 BMW i3-REx
Last 3: 45.67 mpg (US)

Blue Bob's - '19 Tesla Std Rng Plus
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Hi,

One option is to replace the 12V battery with one having a higher "CCA" capacity which sad to say, I don't really know what the OE rating is even after service. But there are a number of alternatives.

I used a resistance, space heater, an especially well behaved load, to stress test the NHW11 inverter. What I observed was a voltage roll-off as the current increased. But you are at the cutting edge.

Now I contacted the vendor of the inverter I plan to use for my wife's ZVW30 and it has a 34 cycle, window for overload, before the current limit protects the circuit. You may want to investigate what your vendor claims.

For my wife's car, I have a high current, circuit breaker bought for RV application. The dataspec indicates it should trip before the fusible link. I'm at a conference but it is rated under 140 A so I'll get a faster action.

GOOD LUCK!
Bob Wilson
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2019 Tesla Model 3 Std. Range Plus - 215 mi EV
2017 BMW i3-REx - 106 mi EV, 88 mi mid-grade
Retired engineer, Huntsville, AL
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