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Thanks for the reply. I am using the CEC for my jurisdiction. I was not aware that the main breaker also needs to be sized at 80% of its load. Thanks again for the reply

Hi, I have been giving the duty of designing the electrical system for our new company building and I have no experience with a commericial electrical so I was hoping someone out there could give me a hand. I am trying to size breakers for panelboards in a new commercial building for our...

Hi, I am currently trying to read through the CSA Electrical Code about installing receptacles for a commercial building. I do not see an area for commercial and industrial electrical requirements, however I assume they fall under the general category? I also was led to believe that there is a...

Well sorry that I did not mention but I am from Canada. Sorry to disappoint.

Hello, I am currently doing a electrical & communication design for a commerical building and was wondering if I could get some input on some good books out there that give a good design process to follow. Things such as schematics, proper wiring techniques, panel scheduling etc. Thanks in...

Good to know :) So I should let the shop guys know they are going to need some sort of a rail system then. Thanks.

I talked to the shop guys and they use 4 skates shown in the attachment. They are the steel rollers but I used the hard rubber on concrete for calculations because there wasn't a steel on concrete friction listed in the website that I could see so I used that for a worst case scenario. And the...

Okay perfect. I calculated using the hard rubber on concrete and assumed the most the guys in the shop would use would be 4 rollers. I got a value of around 180kN or approx. 20 metric tonnes but will use a safter factor of 175% just to be safe to get around 30 metric tonnes. Does that sound like...

Thanks so much. I really appreciate it

Okay thanks. But if I used the values there for lets say rubber on concrete, will that be the total force to start it from moving or just to keep it moving after it had already started moving? I guess I'm just wondering if there is still a static value for wheels when they start at rest that I...

The anchors will be attached to the outside concrete column and then a winch system will be attached to pull the equipment on the roller skates. Thanks for the website desertfox. I just have one more question though regarding the rolling friction. I was trying to remember back in my first year...

Hello, I am an electrical engineer but need to do a quick calculation for a new builidng that will have anchors installed in order to move large transformers and gear around in it. However I am not quite certain as to what coefficient of resistance I should use for a wheel between concrete and...