stienman
Mostly Harmless
- Joined
- Jan 6, 2021
- Messages
- 476
First, upgrade your shore power source. Use a heavier gauge power cable (10awg or thicker) along with a step up transformer at the source end and a step down transformer at the use end. This will allow you to put 240V across the looooong cable and cut the current (and thus the voltage drop) in half or more. Most extension cables are rated for 600V, so you may be able to replace the ends of your cable with 240V compatible ends (PLEASE do not keep the stock 120v end!)
Use two of these, one for each end:
That will probably solve the majority of your issues.
Second, configure the hybrid inverter with at least the following:
01 --> Utility first
02 --> 40A maximum charging current (don't want to boil your batteries...)
03 --> Appliance (65-140AC) - the coffee maker may take longer to heat up, but sags won't cause chaos
11 --> 40A - Let the utility constantly charge the battery
14 --> SNU - Both solar and utility charge battery
18 --> Enable overload bypass - some AC voltage is better than none, let the low voltage utility power things if the batteries are overwhelmed.
22 --> SbE - solar will provide power to battery and load, not just battery
Of course, if your equipment can't handle sags that low you might have to set 03 to UPS mode, but you might be pleasantly surprised at what your appliances can handle.
This won't help for when you have to operate without shore power. If that's not uncommon, consider adding an inverter generator to your setup or adding more battery capacity.
Use two of these, one for each end:
That will probably solve the majority of your issues.
Second, configure the hybrid inverter with at least the following:
01 --> Utility first
02 --> 40A maximum charging current (don't want to boil your batteries...)
03 --> Appliance (65-140AC) - the coffee maker may take longer to heat up, but sags won't cause chaos
11 --> 40A - Let the utility constantly charge the battery
14 --> SNU - Both solar and utility charge battery
18 --> Enable overload bypass - some AC voltage is better than none, let the low voltage utility power things if the batteries are overwhelmed.
22 --> SbE - solar will provide power to battery and load, not just battery
Of course, if your equipment can't handle sags that low you might have to set 03 to UPS mode, but you might be pleasantly surprised at what your appliances can handle.
This won't help for when you have to operate without shore power. If that's not uncommon, consider adding an inverter generator to your setup or adding more battery capacity.
