Electricity To Portable Building

What size wire is needed to run 100' from the main breaker panel at the house to a portable building? The load center at the protable building will run an 8000 BTU 110V window AC, two single bulb light fixtures and one 110V wall eletrical outlet.



Thanks for your help.
      

I have started on a small project to expose the industrial aspects of an office space by removing the drop down grid ceiling. My question pertains to the office light fixtures and how to remove them safely.



All of the fixtures are connected to junction boxes (as pictured). Can I remove the fixtures safely by disconnecting them at the junction box as long as I am certain that the fixtures aren't on ( read: turned off at the light switch)?



I could possibly find and flip the breakers off, but this is an office building with other businesses in operation, so I would hate to cause someone any stress by flipping the wrong breaker. The breaker box is not labeled and is not just for the space that I am occupying.



Thanks in advance for any replies.



Kind Regards,

Cody
      

I'm buying a 12 lead Stamford generator, engine driven, and have a question or two about over current protection and ground fault protection.  I will normally have it wired for single phase 120 and 240 in the double delta configuration.  I may occasionally rewire it for 3 phase 240 in the series delta configuration.



For the single phase setup, what I've read so far leads me to believe I should have a main circuit breaker of about 125% continuous ampacity; it's a 10 kw generator.  Is that correct?  What kind of breaker do I need?  Should this main be a GFCI?  Do I bond neutral and ground?  This is a portable unit so I need to package a load center on the generator frame.  Can I wire one 240 receptacle directly to the main and two or three 120 volt GFCI's on it as well?  Or do I need another 240 breaker downstream of the main?  What should I be thinking about for swithching back and forth between single phase and three phase?  Alot of questions, trying to get smart and be safe.  Thanks.
      

Have bought my dream house.  A 1902 with knob and tube elec. that still works!  It is a 2 story, 6000 sq ft house (needs MUCH work).  I want to install an elevator in later years and I want to use this old knob and tube that is original to the house.  My question is what size breaker do I use for wall plugs and what size do I use for lights?
      

i just recently moved back into my home and found that all of my exterior power outlets seem to be dead. something must've happened while i was out of the house, but i've no idea what.



should be simple right? a breaker somewhere? interior outlets are all fine, no other apparent electrical issues. i've been to the breaker box, and there are no breakers specifically marked for the exterior outlets, and all of the breakers appear to be set/active.



anyone have any suggestions as to where to look for the problem? adv-thanks-ance for your thoughts!
      

Hello.



I recently purchased a home that has a a new grounded breaker panel but none of the outlets themselves are grounded save the hvac system in the basement. I had an electrician come and he said the fastest way to get it done is to switch the appropriate breakers to GFCI breakers in my service box and then I can change the outlets and then just put the stickers that say ungrounded etc on the new 3 prong receptacles. he called the inspector to double check and the inspector told him that he can't do it this way but he needs to find the first outlet in the loop from each breaker line and change that receptacle to a gfci and then we can change each receptacle to 3 prong in that loop.



Wouldn't just changing the breaker do the same thing? also if I did just install a Gfci receptacle on the first outlet in the loop, if it breaks wouldn't the rest of the outlets behind that gfci not function until I replaced the Gfci outlet where as a breaker would just pop and I can simply go turn it back on?



Just wanted to get some opinion from the experts as I'm willing to spend more on doing gfci breakers and am confused as to why the inspector suggested the way he did



Thanks for any help!
      

I have a tankless hot water heater with the following requirements:

Voltage/Freq:240v/60

Wattage:21kw

Max amp load: 88

Min req circuit breaker: 2x60

Min wire size: 2x8 AWG copper (note:should be 2x6)



Amps to house is 200. Breaker box is 10 years old with space to add new breaker. The old 30 breaker will come out, new 2x60 in, and new wiring will need to be run approx 15 feet to location of old water heater.



Initial quotes from electricians via phone are all over the place and I have someone coming to house on Friday for a site estimate. In my understanding, the work is straight forward as stated above. What am I missing? Or what might the electricians be thinking I am not (besides pulling a $40 permit)?
      

I have new 12/2 wire running to my attic (home built 1920) on a 20amp breaker.  My service is 100A and the box is older but not ancient.  The only thing on the line is a couple of outlets and 2 lights.  Would it be code to switch this breaker out for a tandem 15amp breaker?  This would open some space for me as my box is full.  Thanks.
      

I am replacing a feed through breaker panel the bus bar and breaker was inverted but the main breaker is up and down with on being down and I also noticed that the plastic in the back that holds the bus bar is cracked.



I bought a newer model from the same manufacture that has a much better design and a better main breaker.  But unlike the one I already have when you invert it the breaker slots don't line up and cover does not fit properly.



I was thinking about just cutting out the center where the breaker slots are.  I measured and if I cut it just right all I have to do is turn it over and it will line up just have to bolt or weld it in place.  Would this be legal



I also thought about putting the panel the way it came and feeding the bus bar hot and keeping the panel under the 6 throw rule.  Or would that not work because I am using feed through.  There will be 4 double pole breakers and the one main that feeds a sub panel.





I really hate the cheap design of this panel.







I plan to replace it with this.




      

I put in a 240v circuit with two AWG 4 and AWG 6 for ground THHN, less than 20' from the panel. this is for a future welder, compressor or whatever. What size breaker should I put in?