ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Violation?
by HotLine1 - 01/19/23 09:10 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
0 members (), 31 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Mar 2002
Posts: 582
R
Ron Offline OP
Member
Some of the smaller (5kW) generators are available with automatic voltage regulators and some without.
For tools and general construction lighting, the unit without has been doing the job for many years reliably.
Now construction trailers want to run computers off these small gens. Anyone have power quality information, as to how much better the automatic voltage regulator keeps the voltage steady during electrical loading and unloading.


Ron
Joined: Nov 2002
Posts: 169
R
Member
Best bet is the small VR's. A 350 watt can be had for about $45-$50. It can handle puter, prntr, modem, scanner, etc and becomes a part of system. I used this method in 1985 with the IBM desktops. They were very sensitive to voltage. Also, check the specs of the puter. There are a few that have built-in VR's.
Rowdy

Joined: Apr 2002
Posts: 2,527
B
Moderator
Specifically for the “sensitive” {computer?} equipment, I would get a dealer to let you to try out something like a Honda EU1000i Inverter/Generator at the site with intended loads.

Joined: Mar 2002
Posts: 582
R
Ron Offline OP
Member
rowdyrudy,
Are you suggesting adding a VR to a gen that doesn't have one? I think that would be over a feild persons head.
Bjarney,
Thanks for the suggestion, there is one service connection and the inverter models stop at 3kW max, although they claim they can be paralelled $$$.


Ron
Joined: Nov 2002
Posts: 169
R
Member
Ron:
The small VR is a free-standing unit. It has recepts for equipment and a cord/plug to catch an outlet. It stays with the puter, not the genset.
Rowdy

Joined: May 2001
Posts: 717
G
Member
Ron,
When you buy gensets for this purpose, look for gens with a Total Harmonic Distortion of less than 5%. It is not so much the voltage but the wave form that messes up modern electronics. The cheaper Colemans can have an actual Square wave, or even a half wave rectifier on them that will not allow the semi-conductors to semi-conduct.

Also, don't try to charge a battery with them IF it works, it takes HOURS to do any good at best.

Joined: Mar 2002
Posts: 582
R
Ron Offline OP
Member
Unfortunately, the gensets do not have THD or similar ratings available from the manufacturer.

rowdyrudy,
Now I'm confused (doesn't take much). What small VR are you talking about? An small online UPS?


Ron
Joined: Nov 2002
Posts: 169
R
Member
Ron:
One source is Directsalesinc.com. The 350 watt is stock #AR350. I think they have units up to 5000 watts.
Rowdy

Joined: Jul 2002
Posts: 680
W
Member
Tripplite makes line conditoners
go here www.tripplite.com

87 to 140 volts in, regulated to 120v nominal
I have one and it works great on a generator, plenty of usage back in the ice storm in 98.


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
Radar
Radar
Los Angeles
Posts: 349
Joined: April 2004
Top Posters(30 Days)
BigB 9
triple 3
Popular Topics(Views)
302,454 Are you busy
231,865 Re: Forum
216,480 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5