millebe

6 ms·

1.
by millebe 2y ago
Now if you tried this with a hot bolt and equally hot nut, the bolt would contract along its length, but the threads would get looser so it’d probably still be a net loss for clamping load. Rivets, on the other hand, are commonly heated and
2.
by millebe 2y ago
This wouldn’t work. The primary reason heating and cooling bolts works for their removal is because they expand anisotropically due to constraints and then shrink uniformly. If you remove a bolt in this way and measure it with a micrometer,
3.
by millebe 2y ago
NEC chapter 7, article 720 covers wiring of less than 50V. It's important to note that elsewhere in the NEC and other codes, "low voltage" is defined as <600V, <1000V, or <2000V, depending on the code and code cycle
4.
by millebe 2y ago
Your choices are either: - Install this equipment in a permanent manner consistent with its listings and all applicable codes. "Off-grid" does not mean "do whatever you want", it means you aren't connected to a fix
5.
by millebe 2y ago
The rules specify equipment must be installed in a manner per its listing, and there are at least four nationwide codes that cover the attachment of solar panels. In California I would guess there are more, stricter codes (e.g. seismic). E
6.
by millebe 2y ago
This is dangerous and illegal everywhere in the United States. DO NOT DO THIS! All 50 states have adopted NFPA 70, the National Electric Code, and the linked article shows a bunch of things that absolutely DO require a permit and would abs
7.
by millebe 3y ago
14 CFR 121.311(b) Except as provided in this paragraph, each person on board an airplane operated under this part shall occupy an approved seat or berth with a separate safety belt properly secured about him or her during movement on the su
8.
by millebe 12y ago
I think, to put it more simply, those two diodes exist to cause a 1.4 volt drop to the transistor. The transistor is a PNP transistor, so the base (middle terminal) must be about .6V lower than the emitter (top terminal) for the transistor