Joe,
Please look again at the statement of the Mark Ode...I will highlight in BOLD the issues I see with that statement.
1.) Mr. Ode Stated :A weep hole or drain hole, usually located in each corner of the
enclosure must be left open and not used for a No. 4 grounding electrode
conductor, even though it fits extremely well.
My response- Which holes would he be looking at...I dont see a # 4 AWG fitting in a true WEEP HOLE.
2.) Mr. Ode's statement: "There are some panels that have the corner drain holes with an additional
small knockout inside of a larger knockout where either the small knockout
can be removed and a No. 4 inserted into the hole or the larger knockout
can be removed with a connector installed and then the No. 4 inserted into
the connector and tightened down. These knockouts were installed so that
the user would not hopefully feel the need to use the weep holes for this
purpose.
My response is : within his statement he is saying two things.....that weep holes have knockouts in them...which I dont agree with...and they can be used.....
I will assume he is refering to the smaller KO designed for the GEC....not for WEEP HOLES....his statement is very back and forth and not very clear......
You cant say you can't use weep holes and then say a weep hole has a knockout in it...and if the larger inside is removed use it.....weep holes are not to be used in this manner regardless.....the small 1/4" type hole near the SE cable enterance at the bottom or top is not a weep hole....it is put their by the manufacturer for the GEC.
The small WEEP holes are in the corners as Mr. Ode stated.....
Hope this helps...
Here is a reply from Mark Ode from UL
quote:
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A weep hole or drain hole, usually located in each corner of the
enclosure must be left open and not used for a No. 4 grounding electrode
conductor, even though it fits extremely well, since the purpose of the
holes are to ensure that any water that may enter the enclosure for any
reason has the ability to drain out of the enclosure. By inserting
something into these holes and encumbering drainage, you may adversely
affect the operation of the equipment.
There are some panels that have the corner drain holes with an additional
small knockout inside of a larger knockout where either the small knockout
can be removed and a No. 4 inserted into the hole or the larger knockout
can be removed with a connector installed and then the No. 4 inserted into
the connector and tightened down. These knockouts were installed so that
the user would not hopefully feel the need to use the weep holes for this
purpose.