For electrical topics that do not match any of the other headings.
I find Table 310.15(B)(16), as a general reference, with "Not more than three current-carrying conductors" fascinating. Given that the majority...
I have been an electrical contractor for over 30 years and have never had to "ring out" our wiring after the rough-in. We always take our time when...
On an optional standby system, can a 400amp transfer switch be used on a 600 amp service? The normal and load feeders would be sized for 600 amps...
Hello All, I'm trying to put together an inexpensive simple way to meet title 24 lighting code for a small/medium restaurant. It has 4...
Got a call for a outdoor hot tub shocking some people yesterday. When I arrived at almost dark I got a voltage reading of around 20-30 volts from the...
I am needing to control the speed of a hoists used to accurately position a 50lb load. It would be used approximately 5 times per hour for less than...
We all know that the manufacturers of dryers don’t include the power cord with the machine, because they can’t know which type of outlet any given...
I just wanted to throw this out there to get some other opinions. I have a situation in which the utility company's primary fell across the secondary...
I am a general contractor in PA and I unfortunatley got "roped in" to installing baths and kitchens for one of the big "box stores". My issue is I...
A friend of mine just completed a new residential job and the inspector failed him on the final because of the standard incandescent lamps he...
Understanding NEC Vol. 1. Page 322 states; 312.5(C)Ex. (g) Conductor fill is limited to 60%, wording of the text book. However, in the...
I have recently installed a single phase 100A service at a bus stop for a real time sign that includes lighting. Inside the sign there is a modem, PC...
Hi everyone, On table 310.15(B) (16) THHN on the 75 degree column #12 is rated at 25A**. The ** stands for the maximum overcurrent rating 240.4D...
Can i run the metal sealtight underground for my pool pump? Need to run it about 30 feet.
One of our clients has recently been approached by a company that is pushing 'donut' style harmonic filters in order to reduce energy usage. They...
I'm not sure if this is the right forum for this question. If not i kindly ask a Mod to redirect this post. Let's start with a little backround....
Hi, I'm new to the forum and am registered as a consumer. I am a Metrologist and I have used this forum as a source of knowledge for years now. I...
We all know of electricians who go their entire careers without torque their lug nuts to the listed pressure. I want to break that habit and find a...
I need help trying to spec a 75KW Diesel Generator with integral fuel tank (installed directly beneath the generator) manufactured by Cummins. Can...
My company has received a proposal for the installation of USES Power Shaver devices. www.powershaver.com/Home/tabid/103/Default.aspx ...
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