For Canada: See the related link below. For U.S.: There's no short answer to this. Check out NFPA 70E, which addresses exactly this. See Related Link Below.
In the US, that legislation is the Occupational sAfety and Health Act, and the regulation is the National Electrical Code, NFPA 70.
National Electrical Code (NEC)
Electrical engineers regulation are the do and don't that govern the profertion.
Purpose of Electrical RegulationsThe regulation of the use of electricity came about for the safety and protection of life and property. If electrical wiring and devices are used in an unsafe manner, it is very possible that electrocution or fires can result from failure to follow safe practice.Therefore, it is very important that electrical design, installation, and use be done properly, by workers who are properly trained and experienced.
The E&A Regulation Act requires professional electrical engineers to design electrical installations on all non-exempt projects. Master electricians licensed by the State Electrical Board are authorized to plan, layout or supervise the installation of wiring, apparatus, or equipment for projects they are installing.
There are no safety regulation specific to a gym.
There are several online websites that offer safety regulation guidelines for electrical repair by state. You can also use a search engine to find a list of safety regulations. Safety regulations will sometimes differ in some regional areas. Also, there are different standards in place as well. For a list of widely supported regulations, check this blog at: [url]http://safetyinstruction.blogspot.com/2009/12/electrical-safety-regulations-making.html[/url].
The University of Phoenix offers a course where you can get an electrical installation certificate.
role of national electric code in the design of electrical installation
The installation commander
National Inspection Council for Electrical Installation Contracting was created in 1956.
how to reduce phase to earth shockYou can reduce the risk by keeping away from it. An electrical installation has several features to insure safety as far as possible, but getting the installation checked by an electrician is a good start.