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 (), 21 guests, and 18 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#50121 03/23/05 08:33 PM
Joined: Sep 2004
Posts: 174
B
bot540 Offline OP
Member
I was wondering if other electricians acually use formulas or the multipliers when bending offsets when using 1/2" or 3/4". Or do you just eye it?


Jesus may have been a capenter,but God was an electrician.Genesis1:3
#50122 03/23/05 08:39 PM
Joined: Feb 2002
Posts: 840
C
Member
A single "quickie" offset can be done by eye.

However, multiple, lined up, in-and-out, etc offsets should be done with the measurements and formulas.

Peter


Peter
#50123 03/23/05 09:03 PM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
[schwartzenegger]You must vuse de formulars![schwartzenegger]

If its one pipe by itself, I'll eye-ball it. Thumb and feel.

If its 30 next to each other, I use the multipliers, and a magnetic protactor, levels, calculator, chalk-line, lasers of varying types, and a fresh jolt of coffee.

I just got done with a job doing about 20,000'+ of 1/2" and 3/4", all exposed for an Arch's office. If I saw anyone eye-balling I'd throw a fit, if not an object. I had under 10% waste, not bad considering, the amount that actually got bent. 50%


Mark Heller
"Well - I oughta....." -Jackie Gleason
#50124 03/23/05 09:04 PM
Joined: Feb 2003
Posts: 687
A
Member
Small offsets I just do without thinking. Otherwise I will use formulas unless it's in bad working conditions.

Tom

#50125 03/23/05 09:11 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
I use the formulas also on larger and repetitive bends.

We are not taking rocket science here, an offset made of two 15 degree bends has 4 as the multiplier an offset made of two 30 degree bends has a 2 as a multiplier, either are easily done in your head.

A multiplier of 1.4 works well for 45 degree offsets.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#50126 03/23/05 10:21 PM
Joined: Jul 2004
Posts: 9,745
Likes: 13
G
Member
One of the conduit bending sites had a great trick. A standard hickey is 30 degrees with the handle straight up so you use 30s for your offset and the magic number is 2.
So if I want a 2" offset I put the marks on the pipe 4" apart and line it up to the first mark on the hickey, bend them until the handle is straight up.


Greg Fretwell
#50127 03/24/05 12:52 AM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
A 30 in a single shot with a hicky is a little too tight. IMO

"Straight up" only depends on what you're bending against. All those benders with levels in them make me laugh, find a level floor first.

Site line benders work well, but you can't move your head, or its useless. Hard to do if you need to put your body into 3/4 or larger.

And whats with this.... Some benders are 30 straight up, and some are 45 straight up.

Anyway, I think there needs to be a better bender, and I have some ideas...


Mark Heller
"Well - I oughta....." -Jackie Gleason

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
Posts: 362
Joined: April 2003
Top Posters(30 Days)
dsk 3
Popular Topics(Views)
297,529 Are you busy
228,342 Re: Forum
213,218 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5