ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
1 members (bcpappas), 50 guests, and 17 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#3463 08/18/01 10:08 AM
Joined: Aug 2001
Posts: 3
S
Junior Member
When my lights started to momentarily flicker when my new A/C would come on, I called the installer about it. He said they could come out and install a "fast start" or "quick start" device to stop the flicker. Has anyone ever heard of this? If so, will it have any long term harm to my A/C or electical system? I guess I might be at the limit of my electrical service and was wondering how I could really figure that out.

#3464 08/18/01 11:28 AM
Joined: May 2001
Posts: 717
G
Member
A "quick start" device is really nothing more than a capacitor. What does it do( and more appopriately - How do it know? ) it smooths out the distortion in the phase angle variance when a single phase motor starts up. You see lights flicker because their perfect little 60 cps world has just been altered. Long term harm, Yep, but you won't live that long.

#3465 08/18/01 07:41 PM
Joined: May 2001
Posts: 376
F
Member
i have been in the electrical and refrigeration industry for 10 yrs now and have never herd of a "quick start" i have herd of and used many "hard start" devices however i have never seem them used in this way.they are wired across the compressor capacitor terminals to raise capacitance on compressors that trip the O/Ls during start up.also i have read you can raise capacitance up to but no more than 10% without any long term damage to motor windings.post back and let me know how this works in reducing the flicker effect which by the way is a very common problem.

#3466 08/18/01 08:31 PM
Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
My two cents:

I think we're all on the same page here, but I thought they were called "Soft Start" devices [Linked Image] (Maybe just a local marketing term)

Bill


Bill
#3467 08/18/01 08:42 PM
Joined: May 2001
Posts: 717
G
Member
OK, nothing stops the "flicker" effect of a single phase compressor coming on, the Hard start, quick start, soft start whatever you wanna call it kits are meant to reduce phase angle corruption at the unit, for the unit. period = HOWEVER, some manufacturers contend that by making the adjustment at the source of the problem, you reduce the problem away from the source. It will not injure your wiring system, it will only have effect on appliances or devices which are being utilized at that moment, like I said, he ain't gonna live long enough to notice any failures from this minor distortion.

#3468 08/19/01 03:56 AM
Joined: Dec 2000
Posts: 4,291
Member
Just make sure that you aren't buying a bill of bull!!

Capacitors are cheap. Don't go buying a new condenser that's "Y2K compliant, quick start, energy saving, as seen on TV...etc." without really assesssing your needs
I once knew a refrig. contractor that would sell an installation kit for a capacitor for $42. The kit consisted of 2 orange wirenuts and a 6-32 screw. (worth at net about 20 cents)

#3469 08/19/01 08:10 PM
Joined: Oct 2000
Posts: 5,392
S
Member
man, seasoned tradesmen chewin' the 'terminology' rag. [Linked Image]
someone could write a book with all the lingo that comes thru this forum...


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
CDS
CDS
Nicholson Ga
Posts: 34
Joined: June 2006
Top Posters(30 Days)
BigB 4
triple 3
Popular Topics(Views)
302,928 Are you busy
232,027 Re: Forum
216,767 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5