UTS6 using only 120v

[Anonymous user]

Good morning, I've searched this forum and called tech support and they are telling me i can split my 1 leg of 120v power from my L5-30amp plug on my generator and provide 120v to each side of the 6 circuits on the UTS6 and power all 6 circuits with no issue. They however don't sound very confident. Can anyone confirm they've done this? I am using the Predator 3500 120v generator. Thank you

[BillP]

i have installed two of these UTS6. Easy to do & worked as suppose too. The only thing i didnt like was that the flexible metal conduit (greenfield) containing the connection wires to your panel is undersized and should have been 3/4". has some good features that you set and can walk away from such as: load managment-great feature, load source (gen,ups,other) selection, delay settings, and also found out if you turn a circuit off at your panel under utility power that is tied to the UTS, the UTS will not turn power back on to the circuit until you acknowledge a reset on the UTS for that circuit(good feature in case of over-current breaker trip). you must also make sure you set the proper circuit amperage (15a or 20a) for each circuit connected. overall, good product, would buy again.

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[Anonymous user]

Thank you for your response. May I ask if you are running your UTS6 units off of a 120v generator connection. If so, how did you decide to splice the two feeds on the UTS6 together. I have an idea but I'm curious if you may have a better one.

Thank you again

[skola28_apc · Accepted solution]

From my experience with the UTS10BI, you can power both legs by wiring the single HOT out of the generator to both HOT wires on the Transfer Panel.  The problem is, that the circuitry that controls the relays requires generator power across circuits 9 and 10 to add up to 240.  When they both are on from the same leg, you get 0V, therefore no power to the circuitry/microcontroller and therefore the relays don't work.

If you have a UPS plugged in, that's not a problem as the APC UTS circuitry that controls the relays will be powered by the the UPS.

If you don't have a UPS, you can plug one of the other 120V outputs from your generator directly into the UPS backup port, thus having two connections from your generator to the APC panel.

What I'd really like to know, is how to modify/jumper the APC circuitry to accept 120V input power instead of 240V.  They do this on the UTS6H, but its not clear how to effect this modification on the UTS10BI.