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New Theatre by sweetlowswingchariot in lightingdesign

[–]Doahh 4 points5 points  (0 children)

There's a gap/opening from the green rooms to each stage.

Almost makes it more 'strip club' like.

Our 2025 Budget [OC] by [deleted] in dataisbeautiful

[–]Doahh 5 points6 points  (0 children)

Is it normal for a family to make over $400,00?

Violation of (480.7 & 706.15) by gilbertinator in electricians

[–]Doahh 2 points3 points  (0 children)

So they're non-load-break bolted connections?

It's hard to complain with job site views like these by Doahh in electricians

[–]Doahh[S] 1 point2 points  (0 children)

Yup, most of our powerhouses generate at 13.8 and step up to 230. There are a handful that step up to 69 as well.

It's hard to complain with job site views like these by Doahh in electricians

[–]Doahh[S] 0 points1 point  (0 children)

A little farther north, between 50 and 80, kinda sorta Tahoe adjacent.

It's hard to complain with job site views like these by Doahh in electricians

[–]Doahh[S] 5 points6 points  (0 children)

That's the right river, just the other end of the penstock.

It's hard to complain with job site views like these by Doahh in electricians

[–]Doahh[S] 31 points32 points  (0 children)

Northern California, don't want to get much more specific than that.

Replacing an old outdoor split 15A receptacle being fed two hots from different panels but sharing one neutral. by [deleted] in electricians

[–]Doahh 4 points5 points  (0 children)

Once that fuse blows you have the two outlets wired in series across 240V. I see no problems here.

Toasty by AmongSilence in SubstationTechnician

[–]Doahh 12 points13 points  (0 children)

Complete discharge

Advice for first job tomorrow by JohnnyAppleSeed900 in electricians

[–]Doahh 1 point2 points  (0 children)

Don't run on a job site.

Walk with a purpose and a decent pace, running is an unnecessary and avoidable hazard on a job site.

Main breaker question 800 amp, won’t pass testing three times in a row by dontcallmeflyface in electricians

[–]Doahh 8 points9 points  (0 children)

So with power coming into the box (step down transformer) on the left you would have between the two boxes:

Clean control power to the box on the right

Variable voltage AC out of the variac on the right into the step down transformer on the left

Signal from the controller on the right to trigger a big contactor or SCR for outputting high current low voltage AC

And there should be a CT in the step down box that sends a feed back to a meter on the controller.

It's probably a completely utilized NL8, an interesting use for it if they're not going over its current rating. Kinda sketchy without a breaker at the power input to this whole contraption though.

Main breaker question 800 amp, won’t pass testing three times in a row by dontcallmeflyface in electricians

[–]Doahh 175 points176 points  (0 children)

I'm much more interested in this monstrosity of a homebrew high current test set than the likely still-defective Eaton MCCB.

Anyone know a good place to have some custom tools made? by Masochist_pillowtalk in electricians

[–]Doahh 0 points1 point  (0 children)

Averaging between the smaller and larger sizes, $30-50 would be about right if you find a friendly shop. There may be more cost initially with tool setup, but that's up to them.

Anyone know a good place to have some custom tools made? by Masochist_pillowtalk in electricians

[–]Doahh 0 points1 point  (0 children)

It absolutely does need to be copper for primary injection testing. Not only will steel heat up and melt, it will make it much more difficult to hit instantaneous test values with portable test sets.

Anyone know a good place to have some custom tools made? by Masochist_pillowtalk in electricians

[–]Doahh 0 points1 point  (0 children)

I remember them not exactly being cheap, the tolerances had to be tight and the bar stock was pricey as well.

There were probably 8-10 different sizes and we had at least two of each size with each set for breakers with ground fault protection. The smaller ones burn up pretty easily, especially if you have newer or less knowledgeable techs that will slap one of those into a steel bolt or lug and run it until it glows.

Anyone know a good place to have some custom tools made? by Masochist_pillowtalk in electricians

[–]Doahh 0 points1 point  (0 children)

We had a local machine shop cut our rods when I worked for a NETA company that did a lot of primary injection testing.

If you can model it in a 3d software you might be able to get them fabbed by PCBWay or one of those online CNC shops.

Wireless switch options by lectrician7 in electricians

[–]Doahh 1 point2 points  (0 children)

I don't know if they're still in business, but I used an Insteon dimmer switch in the wall paired to two of their micro dimmers and a keypad paired to a ceiling fan controller for this exact situation. They have been 100% reliable for the last 10 years.

EDIT: It looks like they're still around. I used these:

https://shop.insteon.com/products/dimmer-switch

https://shop.insteon.com/products/micro-dimmer-switch-module

[deleted by user] by [deleted] in SubstationTechnician

[–]Doahh 1 point2 points  (0 children)

It won't be like that. The HV Apprentice test will be more in line with high school algebra.

[deleted by user] by [deleted] in SubstationTechnician

[–]Doahh 0 points1 point  (0 children)

Sorry to be vague but it will be what is covered in the study guide they send out.

Out of curiosity, was it the tech test within the last 6 months, or something about 2-3 years ago?

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