BAC Forum

General Boards => Technical Support => Topic started by: Doug Allman on December 31, 2018, 09:30:42 PM

Title: low power on one side of 220 volt
Post by: Doug Allman on December 31, 2018, 09:30:42 PM

We have been getting 106, 107 or 108 on one leg of 220v and 120 to 121 volt on other leg. Low power alarm sounds when this is happening. When do you get concerned with this situation and unhook power to coach?  Been in this RV park and same site in Az for several years and first time it has happened. We have an all electric coach.

Title: Re: low power on one side of 220 volt
Post by: Steve Huber on December 31, 2018, 10:13:32 PM

Doug,
114 -126 VAC is the normal range for AC supply. As voltage drops, the appliance will draw more current to maintain it's spec'ed power (wattage) level. Power = Voltage X Current. IMHO 106 is getting pretty low, although I think most newer appliances will tolerate it. Have you checked your pole and a neighbor's power pole to see what the voltages are? This will tell you if it is your coach, your pole, or the park supply itself. I'd also rattle the park owner's cage as this is obviously not what you are paying for.
Steve

Title: Re: low power on one side of 220 volt
Post by: Roy Boles on January 01, 2019, 02:43:23 AM

I go with Steve on testing the power pedestal. I would test my pedestal, both sides and several others on the same circuit to see what they are putting out. I have run into problems before. Thank god for my surge protector.

Title: Re: low power on one side of 220 volt
Post by: Bill Lampkin on January 01, 2019, 04:11:07 AM

Blame the low leg voltage on the cold weather, everyone is using some kind of heater!

Title: Re: low power on one side of 220 volt
Post by: Gerald Farris on January 01, 2019, 02:55:14 PM

Doug,
I agree with Steve in that 106 is pretty low, and an issue of concern, but it is not at the disconnect level. For me the 104 volt level is disconnect time and turn on the inverter/generator to supply your own more dependable power. If your refrigerator is on the low leg, that is a higher level of concern than it would be if you only had resistance heating like the AquaHot heating element on the low leg. So your concern level should be tied to what is on that leg.

Gerald

Title: Re: low power on one side of 220 volt
Post by: Stan Simpson on January 01, 2019, 04:27:58 PM

I agree with the experts, Doug. (duh) Had the same situation in California in September. Two all electric Newalls, one on each side of me, on the same circuit. Dropped my voltage so bad the breakers tripped. When they left, all back to normal.

Title: Re: low power on one side of 220 volt
Post by: Doug Allman on January 01, 2019, 09:58:20 PM

Thanks to you all and I have brought it to the parks attention on the same day. Park was very full and quite cold here in AZ that morning. Have not see it since then and this morning even colder but less units in park with no alarms on low power.