Code
The section and rule number that pertains to refrigerant motor compressors.
Section 28
28-700
Maximum amp rating for a plug fuse.
30 amps
Voltage, Frequency, Continuous Current, and Interrupting Capacity.
Circuit Breaker Rating
The maximum short circuit current that an overcurrent device can safely interrupt without damaging itself.
Interrupting Capacity
Normally Carries 20-60 amps of current through it's contacts.
Contactor
A document that must be obtained to install any electrical service to HVAC/R equipment.
Permit
The interrupting capacity rated in amps for a standard code fuse.
10,000 amps
Thermal element and electromagnet in series with the contacts.
Thermal-Magnetic Breaker
A current larger than normal, but still flowing within it's normal path.
Overload
Contacts of are made from this material.
Silver or Cadmium
Additional regulations changed by provincial electrical branch is BC are known as.
BC Amendments
Fuse that provides overload and short circuit protection.
Form 1 HRC
Do not use this breaker where quick response to short circuits are required.
Thermal Breaker
The maximum current a fuse can carry for prolonged periods without opening.
Continuous Current rating
Normally carries less than 20 amps through it's contacts.
Relay
Who enforces the Canadian Electrical Code.
Electrical Safety Branch / TSBC
Interrupting capacity of HRC fuses in amps.
100,000 amps
Electromagnet in series with the contacts.
Magnetic Breaker
Current larger than normal which flows outside it's normal current path.
Short Circuit
24v,120v, 208-230v, 460v, and 575v are several options available for a relay or contactors.
Coil Voltage
The location of a disconnect for all refrigeration and A/C equipment.
Within sight and within 3m of equipment
Fuse that provides for short circuit only.
Form 2 HRC
Uses power semi-conductor devices to perform switching action.
Solid State Breaker
The ability of a fuse to quickly extinguish an arc after fuse link has melted.
Voltage Rating
A device that is a contactor with the addition of built-in overload protection.
Motor Starter (Mag Starters)