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 gfretwell
Yesterday at 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 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 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
1 registered (HotLine1), 342 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#2285 - 06/30/01 10:43 AM commutator
frank Offline

Registered: 05/29/01
Posts: 361
Loc: windsor ontario canada
what is the best condition for a commutator
a light straw
b jet black
c dull copper
d chocolate
i choose chocolate as we want to see a good commutator film graphite plus copper = brown

jet black was another possibility

dull copper would mean that there was no brush contact or it was new

light straw same as above

i have asked experienced electricains and motor builders who told me they would have picked jet black,dull copper and even shinny copper?

what do you think??

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....

#2286 - 06/30/01 11:48 AM Re: commutator
sparky Offline

Registered: 10/18/00
Posts: 5545
i never really considered this finer point, it is very interesting...usually i am called when the 'smell' has differed


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