The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by ghost307
Today at 04:10 PM
International Wire Colour Codes
by Tjia1981
Today at 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 12
HotLine1 7
renosteinke 6
ghost307 6
Potseal 4
Who's Online
0 registered (), 165 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#46472 - 12/23/04 01:52 PM Generator testing with bldg. load
cgw Offline

Registered: 07/29/04
Posts: 133
Loc: Rochester NY
Apparently nursing homes are required to test thier standby generators by transfering the building load to the generator. Has anyone seen any problems associated with this monthly switch throwing??
(e.g. voltage spikes or dips)

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#46473 - 12/23/04 02:19 PM Re: Generator testing with bldg. load
iwire Offline

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
It is more than a dip, it is an interruption.

You will want to make sure any items like PCs are either off or on UPS.

I don't believe you will see see spikes or other issues as the switch won't transfer until the generator is running smoothly.

I am assuming a modern automatic transfer switch.
Bob Badger
Construction & Maintenance Electrician

#46474 - 12/23/04 04:04 PM Re: Generator testing with bldg. load
NJ Wireman Offline

Registered: 08/26/04
Posts: 179
Loc: New Jersey (South Jersey)
we have a gen. system in our fire station that we test monthly, we kick it over with everything on pc tv's what ever happens to be on at the time. Never had a problem in 11 years. let me tell ya you hate to be the guy to test it when that thing throws itself its loud.

[This message has been edited by NJ Wireman (edited 12-23-2004).]

#46475 - 12/23/04 04:12 PM Re: Generator testing with bldg. load
slumlordworker Offline

Registered: 12/20/03
Posts: 88
Loc: south bend indiana
I worked as maintenance supervisor for over a year at a nursing home and I never had any problems with our generator.

we were required to run ours once a week and throw or trip the switch once a month. I rigged a meter up to the panel that it feed to get voltage measurements.

all was fine til we had an ice storm and that poor thing ran for about 9 hours than finaly it gave the ghost. talking about a erious issue when it is 25 outside and your healthcare provider has no power or heat at all that was a long and intresting night to say the least

#46476 - 12/23/04 07:15 PM Re: Generator testing with bldg. load
resqcapt19 Offline

Registered: 11/10/00
Posts: 2209
Loc: IL
Many health care facilities specify a transfer switch that has the ability to sync and briefly parallel with the utility so there is no outage for the required testing.


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals