Red Seal Plumbing Practice Exam 2026 – Comprehensive All-In-One Guide for Exam Success!

It is not acceptable to use grooved pipe fittings from one manufacturer with grooved pipes from another manufacturer because different manufacturers may have variations in their design and specifications, which may not fit or function properly with each other. This could lead to leakages, malfunctions, and potential safety hazards. It is important to use fittings and pipes from the same manufacturer to ensure compatibility and proper functioning of the plumbing system. Option A is incorrect because of the reasons stated above. Option C is incorrect because approval from a governing body does not guarantee compatibility between the different manufacturers' products. Option D is incorrect because the quality and safety standards for potable water systems are stricter and require specific fittings and pipes suitable for drinking water.