Canada Secondary Distribution Box Sockets

Canada uses Type A and Type B sockets in secondary distribution boxes, rated at 120 V, 60 Hz, with grounding options for safe device connection.

Socket Types and Specifications

In Canada, the standard sockets installed in secondary distribution boxes are Type A (NEMA 1-15) and Type B (NEMA 5-15) .

• Type A: Ungrounded, two flat parallel prongs, rated at 15 A, 120 V. The blades are polarized, with the neutral blade wider than the hot blade, ensuring correct orientation .
• Type B: Grounded, two flat parallel prongs plus a round or U-shaped earth pin, also rated at 15 A, 120 V. The grounding pin is slightly longer than the flat blades to connect first for safety . Both types are compatible with North American plugs, and Type A plugs can fit into Type B sockets, but not vice versa.

Mounting and Distribution Box Integration

Canadian sockets are designed to fit standard wall boxes:

• 2x4 wall boxes: Require specific frames and wall plates for proper installation .
• 4x4 wall boxes: Also supported with modular frames and plates.
• European wall boxes: Some Type A/B outlets can be mounted on 121 mm center European boxes using compatible frames .
• Surface mount options: Available in insulated or metal boxes, including IP66-rated weatherproof enclosures for outdoor or industrial use . The modular design allows integration with GFCI/RCD devices, switches, and circuit breakers, providing flexibility in secondary distribution setups.

Electrical Standards

• Voltage: 120 V
• Frequency: 60 Hz
• Current rating: 15 A
• Wiring: 2-pole, 3-wire grounding (2P+E) for Type B sockets These standards ensure compatibility with most North American electrical devices and provide grounding for safety.

Safety Considerations

Type A and B sockets are not recessed, meaning partially inserted plugs can still be live, posing a risk of electric shock . Proper installation in secondary distribution boxes, use of grounded Type B outlets, and adherence to Canadian Electrical Code guidelines are essential for safe operation.

Summary

Canadian secondary distribution boxes typically use Type A and B sockets, rated at 120 V, 60 Hz, with grounding for Type B. They are compatible with standard North American plugs, can be mounted in various wall boxes, and support modular devices like GFCIs and switches. Proper installation and grounding are critical for safety and compliance with electrical standards .