I also responded in the other thread. These rebranded NOMA units are actually Xantrex units. Very good products. Powersource 400 Powersource 1800 Keep in mind that i'm a little skeptical about even the 1800 'running a sump pump, refridgerator etc' continously for a longer length of time. I don't doubt that it will get these things going. But I wonder how long that 60 amp hour (3x20 amp hour SLA AGM) will actually last under sump pump conditions?

PowerSource 1800 Owner’s Guide About Xantrex Xantrex Technology Inc. Is a world-leading supplier of advanced power electronics and controls with products ranging from small mobile units to utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup power applications in both grid-connected and stand-alone systems.

On the other hand, i'm quite surprised at the flexibility with my powersource 400. It's run many things in my home and it's been worth every penny. Here's a review on the powersource 400 unit from home perspective.

Jan 18th, 2007 3:10 pmVancouver, we had lots some even 3 days long and a few people died because they used their outdoor BBQ's to heat their home Wow, do you mean Vancouver itself or somewhere else in the GVRD? I live in Burnaby, and my computer was running UPS-less throughout this whole mess. Not so much as a flicker. Of course, I commute via transit, so I haven't escaped unharmed either. PS Tis sad and all, but I can't believe people are so stupid to mix unvented combustion and a tightly sealed home. I thought we had all learned about that many years ago. Jan 19th, 2007 2:03 amI also responded in the other thread.

These rebranded NOMA units are actually Xantrex units. Very good products. Powersource 400 Powersource 1800 Keep in mind that i'm a little skeptical about even the 1800 'running a sump pump, refridgerator etc' continously for a longer length of time. I don't doubt that it will get these things going. But I wonder how long that 60 amp hour (3x20 amp hour SLA AGM) will actually last under sump pump conditions?

On the other hand, i'm quite surprised at the flexibility with my powersource 400. It's run many things in my home and it's been worth every penny. Here's a review on the powersource 400 unit from home perspective: Manufacturer says the 1800 can drive a 1/2 hp sump pump for 45 min. Probably just barely sufficient for a temporary blackout during a heavy storm. Should work for several hours during non-storm blackouts when the sump pump isn't working every few minutes. See: I bought one last year when it went on sale for $349.99, then went back a month later for price protection adjustment when it went down to $299.99. If you're thinking of getting one, this is as cheap as it gets, so don't wait.

Hi there, thanks for the great advice in these forums. I'm hoping to find a bit of specific advice on a Noma-branded Xantrex Powersource 1800 battery backup.

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It's an old unit, with maybe 10yrs service as a sump pump backup, so the batteries inside are not holding a charge anymore, but it does still supply non-sine AC power when connected with booster cables to a running automobile's red battery terminal and engine block. It is rated 1800W continuous and 3600W peak, but it is cutting out with an overload error (E03) with even just a 900W space heater or 1/2hp water jet pump plugged in by itself. None of the components on the circuit board seem to show any signs of physical damage or burn marks, and all eight 30amp fuses look ok. It might possibly have received a shock when a tree in the backyard was hit by lightning while it was in the basement, unsure on that. Here are a few pics of the setup and circuit board. There are reports online of this Powersource unit having transformer problems. Can these components be DIY repaired or otherwise jury rigged for a quick fix?

I only have a basic digital multimeter for testing, and am learning as I go what can be tested for what. Thanks for any advice that will get this unit running strongly again, it'd be great if it could power the oil furnace too!

Quote: E03 Overload shutdown while supplying backup power. The AC product(s) connected are consuming more than PowerSource 1800’s power rating. Use products with a total power consumption within PowerSource 1800’s continuous power rating of 1440 W. The AC products connected have a surge power that exceeds PowerSource 1800 surge capability. Use products with a total starting surge power within PowerSource 1800’s capability of 2880 W. One or more of the connected products are damaged.

Have the damaged product serviced by a qualified technician. Get those dead batteries out of it and recycle them down at the port I believe that the poor contacts and small diameter wires you are connecting to your 12VDC source are insufficient for your load. You need some heavy cabling for this, heavy and short as possible with solid contacts For a 900W load you would be pulling 75A at 12V f the inverter were 100% efficient, which it is not. Probably need closer to 100A.your toy jumper cables just aren't going to do that mate. And that is assuming that your vehicle alternator can make that, which I doubt. If you look at the spec sheet: Internal battery capacity 51 amp-hours (3 × 17 amp-hour batteries) Internal battery voltage 12 VDC (nominal) It uses three 12V batteries rated at 17AH each for total of 51AH (connected in parallel). So per spec sheet it can continuously put out 120V @12A = 1440 Watts.