Whether you want to install new lighting into your home or office or run cables for the entire electrical system of your building, you should hire an electrical contractor.
Not just any contractor, but a fully qualified electric contractor who will be able to install the cables, lighting and other electrical systems safely.
There are various professional electricians experienced in commercial and electrical work.
There are many people who assume that the electrical systems in your home or office are easy to figure out and that you can just do them yourself. While you can find DIY manuals to use to help you along, it is always safer to use a professional electrical contractor to do the job.
When you outsource electricians, you also have to make sure that they are certified for legal purposes in case anything should happen. The same goes for insurance. They will not cover anything that you have done yourself, so you will need to ensure that an electrical contractor is used who has the relevant qualifications.
When you go about searching for an electrical contractor, make sure that you check the certifications and also get some recommendations from companies or individuals who have used them before. You can choose to hire an electrical contractor as a team or just a private contractor who will work on his own.