Arc fault detectors

that may be a possibility, but i have not heard that myself.
regarding the dr, i just talked to xantrex at solar 2007, and they have discontinued it.  i dont want to be jerky, buy it from us, buy it from someone else, but you may have to get it quickly because the word i got is that they are going out of production and our distributors have been running out of old SW units as well since xantrex is transistioning to the xw system.

this is one of the least expensive pure sine hardwire units
http://store.altenergystore.com/Inverters/Off-Grid-No-Utility-Needs-Batteries/2000-to-2999-Watts/Magnum-2000W-MS2012-12V-Sine-Wave-Inverter/p748/

also, there may be the option of a refurbished SW or PROSINE that could be pure sine and keep costs down for you.

- james Alt-E staff

FX means sealed
VFX means vented
"T" signifies turbo, which is outback speak for a fan under the cover with the oval logo.  for sealed units with boosted output, the T is now standard (fx2524t).

i have heard of no reliability problem with either.  magnum does not offer the sine wave units sealed.  the main difference seems to be with the user interface and menu systems.  the outbacks are VERY capable machines.  As a result the mate controller has a complex menu system and thick manual that can have a steep learning curve.  The magnum may offer fewer features, but boasts ease of use as one of the best traits.  both outback and magnum split from xantrex after xantrex bought out trace.  both have great engineers and produce good products.  it is not a question of reliability so much as user preference on features, display, ease of use and cost.

also if you are used to a DR, a magnum may be a better fit based on what you have.  magnum also makes a modifed inverter called the RD that may work for you as well, unless your gfci issue gets in the way.

james - Alt-E staff