Search results

The code specifies bonding it at the service, rather than a sub-panel, or at the disconnect if served by a feeder or branch. You can look at the details in NFPA 70 Article 250.104. I wouldn't lose much sleep over it as long as it is bonded in such a way as to avoid a potential difference...

As I recall, the frame needs to be bonded to the ground electrode system. Bonding the sheet metal would not be sufficient.

Do you know if it’s bonded to the steel frame?

It may very well be, but you might want to trace to see where it terminates.

If that’s a metal frame building, the structure should also be bonded to the ground electrodes, which seem to be missing, as we cannot see any GEC in the panel.

A homemade Single Wire Earth Return (SWER) system with assistance from the EGC. The current will flow through both the earth and EGC in proportion to their impedance and potential difference so I would guess most is in the EGC. I have seen it happen strictly via earth when the neutral to a...

In this case, the load is really carried by the Unistrut acting as a post. The connection to the ceiling is only proving lateral bracing, so there is very little load putting a pretty small shear stress on the bolts. I would skip the bolts at the ceiling entirely and add some Unistrut braces to...

Correct

No, it will add some strength, but it will add significant stiffness, which is what we really need in this case. A properly fastened 2x4 along the bottom of a joist is the same as a flange on a beam, and would stiffen a 2x10 joist versus bending by about 50%, and add lateral stiffness to the...

That ring is obviously a cup holder... The tie the lever back method is somewhat effective on my Commando, but you really need to squeeze the front brake lever through 100 cycles to get the last of the air out. On the 850 Mk 3 the front caliper is rotated slightly so the ****** is not at the...

Is this a dead-front GFCI that only protects the dishwasher?

I have uploaded the SoundBook, which shows numerous options. I think you will find mounting drywall on resilient channels will give you the best results.

One of life's little quirks is that pipe is measured by ID, but tube by OD. The same size copper is known by different names depending on whether it is tube for HVAC or pipe for plumbing.

The required locations are listed in the International Residential Code. The sections were R314 and R315 in the 2018 IRC, but are now R310 and R311 in 2024. You need a smoke detector in each sleeping area and on each floor, plus a CO detector outside the door of each sleeping area "in the...

You need to add an expansion tank, so the plumbing will need to be reworked for that regardless.

For hardware of uncertain quality, I always recommend a flotation test to sort them into usable and unusable batches. Transport them to a convenient body of water and toss them in. If they float- use 'em. If not, just leave them there.

It does look like a plumber cut those off!

It does sound like a drain blocked by one or more of debris, biological growth or ice. In my experience in commercial refrigeration, that was a common cause of iced evaps and blocked airflow. Some drains will have a heater, or maybe just a rod that conducts heat from the defrost heater, to keep...

I would be looking at impedance through the system rather than voltage. All of the coils in this type of motor are in series. As you read resistance from the line in through the various points in the motor moving toward the neutral connection, eventually you should find one measurement that goes...

One has been sitting at the end of a driveway in my neighborhood for more than a week. It does not look to be in great shape, so someone would need to be either very dedicated to reworking it or not very particular about condition to pick it up. I have one and neither space nor need for another.