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#2157 - 06/23/01 06:05 PM Surge?
CandCTech Offline
Junior Member

Registered: 06/23/01
Posts: 3
Loc: Clinton, Ma. USA
Just wondering if anyone has any suggestions? Here is the problem; all the lights in the house dim when the condensor of the centeral air comes on. The centeral air unit is on a 20A DP breaker, so it's not just one phase affected.
Thanks in advance.

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#2158 - 06/23/01 06:30 PM Re: Surge?

It could be normal. It could be that the service doesn't have enough KVA available to avoid a noticeable drop when the motor starts.

How old is the motor? Are there leaves in the fan? Has this been a problem since it was installed?

How many houses run off your transformer?

#2159 - 06/23/01 07:05 PM Re: Surge?
Redsy Offline

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Go back to the topic titled "Whats the problem?" on 6-2-01. This was discussed in depth. Most of the replies will apply to your question here.

#2160 - 06/23/01 07:24 PM Re: Surge?
Bill Addiss Offline

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
It would be a good Idea to first rule out loose connections. Check all of them.


#2161 - 06/23/01 08:10 PM Re: Surge?
CandCTech Offline
Junior Member

Registered: 06/23/01
Posts: 3
Loc: Clinton, Ma. USA
I'll check out that "What's the problem". It's brand new, connections are fine, no obstructions of any kind. I was thinking it was a power company problem myself but I was wondering if I was overlooking another possible problem. If it is the power company I'm not aware of any solutions, it's tough getting them to do anything. I was wondering if there is anything on the market to make up for a problem like this for a reasonable amount of money? I know a VFD or soft-start would solve the problem but that seem's a little extreme.
Thanks for the responses, I appreciate it. I stumbled on to this site today, I now have it bookmarked it's a great site.


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