ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
How's Florida doing with Hurricane Ian?
by Bill Addiss - 09/28/22 12:41 PM
Tough being a lineman's kid
by Bill Addiss - 09/28/22 12:39 PM
GFCI's pops in large numbers
by dsk - 09/26/22 04:35 AM
AFCI’s Revisited
by sparky - 09/24/22 09:58 AM
NFPA Price Increase Coming
by Bill Addiss - 09/23/22 02:22 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 48 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Oct 2000
Posts: 2,749
Member
The 2005 NEC has finally deleted all references to a Design E motor.

If I buy a high efficiency motor required by the model energy codes, (ASHRAE 90.1) what design series will I expect to get?


Joe Tedesco, NEC Consultant
Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

Joined: Nov 2000
Posts: 2,148
R
Member
Joe,
The Design E motor was deleted from the NEC because they never existed. They were planned but none were ever made.
Don


Don(resqcapt19)
Joined: Oct 2000
Posts: 2,749
Member
Don

Thanks. I was aware of that. Are any energy efficient motors available?


Joe Tedesco, NEC Consultant
Joined: Nov 2000
Posts: 2,148
R
Member
I believe all of the manufacturer's have "premium" efficiency motors that meet the energy standards. I think that the normal motor is about 90 to 92% efficient and the "premiums" can be about 95%. It doesn't sound like much, but over the life of the motor it can make a big difference in energy costs. Of the total cost of a motor over its life, about 97% is the energy cost to operate the motor.
Don


Don(resqcapt19)

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

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)
dsk 3
Popular Topics(Views)
297,738 Are you busy
228,504 Re: Forum
213,335 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5