Trailer Battery Load Support
As a followup to my recent discussion about my newly acquired CTEK Multi US 7002 Charger I'd be interested in some further input on the subject of trailer battery load support. :) First, I should c...
Forum Discussion
BFL13 wrote:
I agree that 6 ft of #4 is too thin for running toaster and kettle from the 1000w inverter. IMO swap to the store bought #1 wire for better results. The voltage sag is from the thin wires and from a low AH bank, so both can be improved when seeking a cure.
To be clear, I run the coffee maker (550 watts) and toaster (650 watts) at different times, not together, so don't ever pull more than 60 amps, which this chart indicates #4 gauge as suitable.
The downside to those premade Crappy Tire #1 gauge cables is the maximum length is just 3' ... I need 6', no practical way to shorten it. Yes, I could double up each cable to get 6' but I think I'd instead cut heavy gauge booster cables to length and terminate them myself. Your point is well taken though - if I'm going to go to the expense of upgrading to a more costly AGM battery there's no sense wasting some of it's ability to power the inverter under load on voltage drop due to cable gauge.
