CSA B149.1 Clause 4.1 Explained | Gas Installation Requirements
Clause 4.1 of CSA B149.1:25 establishes the general requirements that apply when installing natural gas and propane appliances, equipment, accessories, and components. This clause is especially important for gas technicians because it explains: Here is Clause 4.1 explained in practical terms, because code books apparently believe every simple rule deserves several layers of legal armour. … Read more