Having been in alot of discussion on this site that end up teetering on a single word, I know that an inspector really needs to have a
method of approach to difficult calls.
This is mine.
#1] What does the wording in the NEC actually say ? . Is it clear ? . If yes, then skip to #4.
#2] Is there other language within the NEC that might not directly apply but can help understand a word or phrase ? . If yes, then skip to #4.
#3] Is there info in an ROP, NEC Handbook, or UL Whitebook that helps clear up the question ?
#4] Take the best answer you have at this point and apply common sense to the specific installation that you're looking at.
#5] Is it still unclear which of several options are required ? . Then accept any of those possible options that the contractor chooses.
So this is how I would approach this question on this thread.
#1] What does the wording in the NEC actually say ? . Is it clear ?
My answer is:
No because 680.26(B)(7) has the title, "Metal Wiring Methods and
Equipment" which makes me lean toward the window
not requiring bonding but then the wording after the title says, "..... all fixed metal
parts shall be bonded". . So now we have the word "
parts". . So I'm continuing on to #2.
#2] Other language within the NEC shows concern for
nonelectrical metal parts such as waterlines and yet doesn't require bonding HVAC ductwork because it's not "structural" [250.104]. . Ambiguous intent for nonelectrical metal parts. . There's some specific requirements but there's no general rule that's always followed, so I'm continuing on to #3.
#3] Handbook page 1046, left paragraph under 680.26(B)(7) says, "..... and all fixed metal parts, which include conduit and piping,
metal door frames, and metal window frames, within 5 ft .....". . This is
very clear but an inspector should never ever stop without getting to the common sense question.
#4] Common sense. . Common sense tells me that it's
possible to be shocked when wet and when the metal object is within 5 feet of the pool. . Common sense also tells me it
doesn't matter to the current if the metal grounded object is a window frame or a motor frame. . Possible is good enough for me.
#5] After reading the Handbook, I believe the answer is clear and there are not several options.
M. D. said:
I know several inspectors that hung a hat on that graphic for fence and door frame bonding ,.. I hope Mike will elaborate on it the next time this question appears in a newsletter or article for EC&M....This will undoubtedly cause confusion in the field ,,.not a god ,..but a guru for sure.
You don't bond the metal window frame within 5ft of the pool, I can't approve the installation and it has
nothing to do with Mike Holts pictures.