When you could really use some help with electrical insulation, you will be able to find a retailer that can offer you all the materials that you could possibly want. When you are immersed in a building project, you need to be certain that you will be in compliance with all government regulations. Keeping your project in line with code regulations is important because you do not want to get fined, or your building barred from having tenants moved in. With the right electrical insulation, you will not have a problem with any of the electrical lines because they will be properly protected. Finding a seller of electrical components is important if you want to be sure that your electrical lines will be safe and in line with the electrical code. More importantly, electrical insulation purchased from a quality retailer will come at a great price, keeping your budget low.
Good references here.