| Author |
Message |
|
Vica1ME
|
Post subject: Contradiction with OSHA + 70E  Posted: Wed Jun 13, 2012 4:29 am |
|
Joined: Tue Feb 17, 2009 11:04 am
Posts: 37
|
|
Please help!
OHSA 1910.333(c)(3)(i)(A)(2)
For voltages to ground over 50kV - 10 feet (305 cm) plus 4 inches (10 cm) for every 10kV over 50kV.
NFPA 70E Page 62 “INFORMATIVE ANNEX C” PARAGRAPH C.2.1.2.
Informative Annex C paragraph C.2.1.2 states that “Column 2. The distances in this column are based on OSHA’s rule for unqualified persons to maintain a 3.05 m (10ft) clearance for voltages up to 50 kv (voltage to ground) plus 102 mm (4.0 in) for each 1 kv over 50 kv”.
Is this a typo. If so which one is correct. I am being told that since 70E references OHSA that the OHSA value is correct. Your assistance on this is appreciated
|
|
| Top |
|
 |
|
Vincent B.
|
Post subject: Posted: Mon Jun 18, 2012 6:35 am |
|
Joined: Tue Feb 24, 2009 7:05 am
Posts: 252
|
|
The values in column 2 are based on 4 in per 10 kV (ground-phase, not phase-phase like the voltage in column 1).
There's another typo in the title of C.2: it references Table 130.2(C) instead of Table 130.4(C).
|
|
| Top |
|
|
 
|
Page 1 of 1
|
[ 2 posts ] |
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
|
|
