Taps, Tapping, and Tap rules

Status
Not open for further replies.
M

mdprice55

Member
Location
Tennessee
Does anybody know where I can get some good info (explanation of) taps and tap rules. What is considered tapping and what the rules are. I have never been real clear on this subject.

Also, I am looking for a good explanation of shunts and shunt trips, how they work etc.

Hope I'm not asking for too much here.
 
M

mdprice55

Member
Location
Tennessee
augie47 said:
The commentary in the NEC Handbook has some interesting info on taps (240)
You might try "search" here for shunts and shunt trips...
(they are two completely different animals)

this thread discusses shunts vs shunt trip:
http://forums.mikeholt.com/showthread.php?t=97094&highlight=shunt
Click to expand...

That was a great thread on shunts, shunt trip breakers and the difference between them. I will be perusing the Handbook. I only have a digital copy of the handbook, and while the search feature is great, I wish I had a hard copy.
 
F

frankgi

Member
Location
South Jersey
mdprice55 said:
Does anybody know where I can get some good info (explanation of) taps and tap rules. What is considered tapping and what the rules are. I have never been real clear on this subject.

Also, I am looking for a good explanation of shunts and shunt trips, how they work etc.

Hope I'm not asking for too much here.
Click to expand...



Here is a great PDF on Transformer Overcurrent Protection and also explains some of the tap configurations.

http://w3.squared.com/techlib/docdetail.cfm?oid=09008926800e4da5
 
F

fillmorr

Member
Location
Mansfield Ohio
Tap rules were covered in the first section this year in class and looking it back up for a refresher myself but anyways here you go hope this helps

10 ft tap 240.21(B)(1)
25 ft tap 240.21 (B) (2)
100 ft tap 240.21 (B) (4)
Taps supplyinga transformer primary and secondary not over 25 ft 240.21(B)(3)
Outside taps of unlimited length 240.21(B)(5)
 
Status
Not open for further replies.
Top