Hoping to settle a bet!

[Shortsaler]

a friend just had an over-the-range microwave installed. The installer had to drill a hole thru the cabinet for the power cord. The installer did not use a bushing in the hole. Is a bushing required? (Somebody has to buy lunch for the other depending on who is correct!)

 

[don_resqcapt19]

See 422.16(B)(2)(5)...the only bushing requirement is for dishwashers and trash compactors.

 

[augie47]

which leads to the question, would the microwave cord be a violation of 440.12 ??

 

[kec]

a friend just had an over-the-range microwave installed. The installer had to drill a hole thru the cabinet for the power cord. The installer did not use a bushing in the hole. Is a bushing required? (Somebody has to buy lunch for the other depending on who is correct!)

What code are you under?

 

[Little Bill]

which leads to the question, would the microwave cord be a violation of 440.12 ??

I don't see anything in 440.12 that applies. But I'm old and half blind!
Assuming you're talking about the 2017 code.

 

[letgomywago]

which leads to the question, would the microwave cord be a violation of 440.12 ??

Never cooled a house with a microwave.

 

[kec]

In most all dishwasher installations i have seen, the electrical cord is passed thru the hole that the drain line and water feed occupy.
Typically this hole is 1/12 or larger. I can't possibly seeing anyone installing a grommet or bushing here.

 

[LarryFine]

I say no bushing needed through wood, while a hole in metal could damage wire.

 

[augie47]

Never cooled a house with a microwave.

Typo, of course, 400.12

 

[letgomywago]

Typo, of course, 400.12

Still is the bottom of a cabinet a "wall or floor" or ceiling finish?

 

[augie47]

I say no bushing needed through wood, while a hole in metal could damage wire.

I would think that but 2023 (422.15(B)(2)(5) seems to require a bushing period.

 

[augie47]

Still is the bottom of a cabinet a "wall or floor" or ceiling finish?

That's the reason for my "?".. cabinet wall ???

 

[don_resqcapt19]

I would think that but 2023 (422.15(B)(2)(5) seems to require a bushing period.

The language change for that section between the 2020 and the 2023 added "smoothed edge" to permit the edges of a hole in wood to be sanded.

 

[mopowr steve]

I say no bushing needed through wood, while a hole in metal could damage wire.

I believe you are correct, as all the microwaves I’ve installed come with this (what is this for) plastic edge guard for metal cabinets. Although I haven’t seen a metal cabinet used since the 50-60’s

 

[Tulsa Electrician]

What does the MFG instructions say. Most I have seen show drilling a hole and routing the cord. They even say leave these instructions for the electrical inspector.
What if your argument included the plastic clip for the cord ( power supply cord clamp) Now that would be a violation. ? Who does that.
I say no on grommet as well.

 

[kwired]

Too much picking of nits here. Just protect the cord from abrasion if necessary and move on. Not all instances will be subject to much for abrasion.

 

[Buck Parrish]

Too much picking of nits here. Just protect the cord from abrasion if necessary and move on. Not all instances will be subject to much for abrasion.

He needs a desicive decision since it's a bet.

 

[kwired]

He needs a desicive decision since it's a bet.

And code isn't written to be that distinctive on this issue so I guess depending on terms of the bet the answer to the question is likely no when it comes to whether or not it is always required.

 

[Buck Parrish]

And code isn't written to be that distinctive on this issue so I guess depending on terms of the bet the answer to the question is likely no when it comes to whether or not it is always required.

I agree it's not required. I personally have not done it.

 

[Knuckle Dragger]

a friend just had an over-the-range microwave installed. The installer had to drill a hole thru the cabinet for the power cord. The installer did not use a bushing in the hole. Is a bushing required? (Somebody has to buy lunch for the other depending on who is correct!)

FWIW:
I have never seen a bushing installed in this application.