Your modified sine wave Xantrex 758 likely caused the hair dryer malfunction due to waveform incompatibility with sensitive electronics. While some devices work fine with modified sine wave inverters, modern residential refrigerators, computers, and electronics require pure sine wave power to prevent damage and ensure proper operation.
Master your RV electrical system from house batteries to shore power. Covers 12V DC, 120V AC, inverters, and charging.
TPMS fault on 2022 E-450 likely faulty sensor or relearn needed. Under warranty - have dealer diagnose and repair.
A 30-minute cycle time for your Whirlpool residential refrigerator in an RV at 65°F ambient temperature is slightly more frequent than ideal but not necessarily problematic. Normal cycle times range from 35-60 minutes depending on ambient temperature, door openings, and refrigerator load.
For 1800W toaster oven, need 2300W+ running watt generator at 80% capacity. Battery alternative requires 400Ah lithium with 3000W inverter. Most practical: hybrid approach with 200Ah battery for essentials and small generator for cooking.
CPAP with humidifier draws 100-200W and can cause inverter shutdown from low battery voltage or thermal overload. Best solution is DC adapter for CPAP bypassing inverter. Need adequate battery capacity for overnight use.
Your Class A RV tripping the GFCI every couple days, especially on hot days, is likely caused by your solar inverter developing ground faults as it heats up, though a failing battery could also contribute to the issue.
For your 2005 Southwind with 400W solar and 4 6V batteries, upgrade to a 2000W pure sine wave inverter like the Aims Power or Renogy models. A 2500W unit may strain your battery bank unless you upgrade to lithium or add more lead-acid capacity.
For Grand Design TT's prewired inverter loop with 10/2 Romex, top 2000W pure sine wave inverters include Victron MultiPlus, AIMS Power, and Go Power models. Choose internal ATS for simplicity or external for flexibility.
Ekko with 640Ah lithium and 450W solar can boondock 3-5 days easily, indefinitely in good sun. Monitor usage, charge devices during peak solar hours, and use propane for cooking.