Let’s consider a 750 KVA; 600 VAC – 120/208 VAC rated 3 phase dry-type transformer with a primary current of 722.54 A.
A transformer is a part of a circuit or a feeder and that a continuous load connected to a transformer cannot exceed the rating of the circuit in which such a transformer is inserted.
Although Rule 4-006 was introduced into the Canadian Electrical Code, Part I (CE Code) a few editions ago, (when ampacity tables in the NEC and the CE Code have been harmonized), application of this Rule does not appear to be consistently clear to many Code users.
The CSA Z462 Workplace Electrical Safety Standard has been published for over 10 years now in Canada. It is widely adopted voluntarily by all industry sectors across Canada.
Fire stop requirements have become a source of concern lately among the stakeholders of electrical safety (among the electrical designers, contractors, and electrical safety regulators).
Some installers of electrical equipment have a bit of difficulty in differentiating ground fault circuit interrupters and ground-fault protection. And what is the difference between a typical overcurrent protective device and a ground-fault circuit interrupter?
Per the CE Code, a neutral of each separately derived ac system must be connected by the grounding conductor to the dedicated grounding electrode. True?
This feedback demonstrates that there are plenty of misconceptions among the electrical designers, contractors, and regulators on certain provisions of the legally adopted National Building Code of Canada (NBC) and the CE Code on electrical equipment.
The terms “suspended ceiling” and “plenum” are widely used in the Canadian Electrical Code but these two terms are not identical.
The CE Code means that the emergency generator must be installed in every high building as the required emergency power supply source for smoke control and smoke venting fans and dampers