SoundGuy wrote:
badsix wrote:
how do I find out what my LRA IS?
Check your A/C documentation or look it up online using your unit's make / model. That said, why would you care? - it's going to be somewhere in the 50 to 70 amp range, there's nothing you can do about it anyway, and other than being a curiosity it won't have any bearing on your choice of genset other than to perhaps convince you that you need to go to a larger than necessary genset . . .
I disagree with this rather pessimistic perspective.
Why would anybody care about the LRA? Well, some folks may just want to broaden their knowledge base---to better understand how RV a/c units work . . . or possibly why their RV a/c won't work (start), say, with a given generator. Taking a few seconds to look up the LRA may just provide the answer. Yes, the final solution may be a larger generator, or a Micro-Air Easy Start (MAES), but at least you understand technically what's going on behind the scenes and can make a more knowledge-based decision.
In other situations folks may be in a position where they're able to pick and choose, or match, a given generator with a more efficient RV a/c unit. By taking the time to purchase a RV a/c unit with the lowest possible LRA, one may just negate the need to purchase a MAES, or a larger generator. IMO, a potentially good return for less than 5 minutes of research. I mean why put your head-in-the-sand and just throw down $300 of your hard-earned money (plus installation time/costs) to purchase a MAES (or a larger generator) when simply choosing the "right" RV a/c unit (with a lower LRA) may be a more cost effective solution?
Finally, so SG doesn't think I'm not giving the MAES its due credit, well, I'd like to say I've helped some friends install a few of these puppies, and yes, they absolutely work as advertised. On one unit we measured an inrush current of 64 amps upon compressor startup before installing the MAES. After installing the MAES the inrush current dropped to 29 amps--very dramatic reduction. A Honda EU2000i (with the Eco mode on) easily started and ran the a/c unit after the installation. The only drawback (as I already mentioned) is they're relatively expensive at $300, and, for some, the installation is too intimidating to consider doing DIY. For these non-DIY folks, the cost of the MAES, plus the cost to have it professionally installed, makes the overall cost somewhat prohibitive for some.