All About Ampacity
This is the current carrying capacity for #8 AWG TW 60 in free air
What is 60 Amps
This is the maximum allowable voltage drop, and CEC rule which provides the proof, in a branch circuit to ensure effecient operation of electrical equipement
What is 3%, denotated in rule 8-102 (1) (a)
This is the minimum required conductor ampacity for a 600V, single-phase, 15kVAR capacitor
What is 33.8 Amps
For a resi-tower with 45 identical shoebox apartments, this percentage of the calculated load for suite #36 should be included in determining the incoming main service?
What is 10%
Alex worked as this while working at Cypress Mountain
What is a snowboard instructor
This is the ampacity of each of three #3 AWG R90 aluminium conductors installed in conduit in a room with an ambient temperature of 45 degrees Celsius
What is 73.95 Amps
A dwelling unit needs the Demand Factor calculated. This would be the wattage value for a 12kW wall oven for the branch circuit that supplies the appliance
What is 8000 W or 8kW
(hint: did you read 8-300? *branch circuit*)
This is the maximum permitted fuse size for a 15kVAR capacitor, 600V, single-phase transformer
What is a 60A fuse
This is the maximum number of #12 AWG R90 XLPE 600V non-jacketed cable that can be installed in a 27mm trade size rigid metal conduit
What is 19 conductors
This is Rob's vehicle of choice when riding to Sturgis
What is his Harley
This is the maximum ampacity of #2 AWG aluminium neutral supported cable (NS75) with three insulated conductors, in an ambient temperature of 40 degrees Celsius
What is 110 Amps
For a 120 V load, this is the maximum drop, in volts, allowed from the service entrance (weatherhead) to the point of utilization
What is 6 volts
A dry-type transformer is rated at 30kVA and steps down from 600V to 240V, single-phase. The installastion uses R90 aluminium conductors, and equipement TTR is 75 degrees Celsius. This is the minimum conductor size for the secondary of the transformer.
What is 4/0 AWG
Twelve balanced loads are each supplied with a 3-conductor AC90 cable. The cables are bundled together and in contact for 1200mm. Each load draws 20 Amps at 120 Volts, coming from a supply at 120/240V. This is the minimum size copper cable required.
What is #10 AWG
This is the town where Alex grew up, home to the first Nuclear Reactor built in Canada
What is Deep River, Ontario
Alex asked you to run four single TW60 conductors in free air to carry a current of 56 Amps. However, the conductors are touching each other due to limited space. This is the minimum size conductor needed for the installation
What is #6 AWG
This is the maximum length that a 10-2 TECK90 copper cable can run to supply an 18A load at 240V without exceeding a 2% voltage drop. Assume the load operates at a power factor of 90% and both terminal points are rated for 75 degrees Celsius
What is 33.7 m
A dry-type transformer is rated at 30kVA and steps down from 600V to 240V, single-phase. The installation uses R90 aluminium conductors, and equipement TTR is 75 degrees Celsius. This is the minimum size fuse and disconnect switch for the primary of the transformer
What is a 60A fuse and a 60A disconnect
a single-family dwelling has a total area of 280m² and is supplied by a single-phase 120/240V service. The load includes: a 12kW electric range, a 6kW electric dryer, a 3kW hot water tank, a 6kW sauna, a 17kW baseboard heating system. This is the calculated main service demand.
What is a 150 Amp service
This is the name of the race Rob has completed on 3 seperate occasions
What is the Tough Mudder Race
A motor starter has no visible indicated TTR, and the conduit running to it contains three #8 AWG R90 copper conductors in the branch circuit, as well as four #12 AWG R90 copper conductors in the control circuit. This is the maximum current the #8 wire can carry
What is 40 Amps
This is the size of copper conductor required to supply a 16kW load at 277V, located 90 meters from the source, without exceeding a 3% voltage drop. The load operates at unity power factor, uses R90XLPE cable, and all equipement has a 75 degree TTR.
What is #3 AWG
A group of 3 dry-type transformers are being paralleled and are supplied by a common 600V primary feeder. The transformers are rated at 20kVA, 30kVA and 60kVA respectively. If all three transformers are rated for 90 degrees and copper R90 is used, this is the minimum size conductor in the common primary
What is 3/0 AWG
Inside a service conduit, you find: service conductors are 600kCMIL copper, the panel has a main breaker rated at 400 Amps, and the breaker's TTR is 75 degrees. This is the minimum size aluminium bonding jumper required for this service installation
What is 1/0 AWG aluminium
This is the license Alex obtained after attending school for a non-electrical subject
What is his Commercial Pilot License