Standby
These systems supply power to loads that are not life safety but required by code.
What are legally required standby systems?
NEC 701
This type of load calculation is used to size the service.
What is optional load calculation?
This built-in ATS feature is used to load shed the air conditioning system.
What is the Smart Air Conditioning Module (SACM)?
On a portable generator, this wattage rating is the most important because it represents continuous power.
What is Running Watts?
This is one of the most common ATS-related red tags and occurs when installers ignore manufacturer requirements.
What is violation of NEC 110.3(B) (installation not per listing and labeling)?
These systems often power homes during outages.
What is Optional Standby?
NEC 702
This type of load calculation is used when 1 meter feeds 2 panels.
This question has 2 answers.
What is optional load calculation for the service and standard for the panels.
The total number of control wires between the ATS and the generator.
What is 7?
Required clearance from the back of the generator to a stationary wall or building on a 22kw Generac Generator.
What is 18 inches?
This required space is missing when an ATS is installed too close to obstructions.
What is working clearance?
NEC 110.26
A 26kW generator running on natural gas is rated for this maximum continuous output.
What is 22,500 watts?
The percentage decrease from LP to NG is approx. 10-20%. I would go by about 15% decrease to make it an easy number to remember and you will not be wrong.
A load shed device monitors this electrical property to determine when the generator is overloaded.
What is frequency?
These two control wires sense utility voltage dropout and have 240V across them.
What is N1 and N2?
This formula is used to calculate the minimum starting watts needed for a motor.
What is
Starting watts= LRA x Volts?
This NEC rule requires a disconnecting means at the generator.
What is NEC 445.18?
These systems are required to automatically supply power to critical life safety loads.
What is Emergency System?
NEC 700
The maximum number of loads that can be managed using the SACM and additional load manager modules combined.
What is 8?
When splicing generator feeders in a junction box for 2 ATS units, this critical wiring mistake must be avoided.
What is crossing phases?
You will need to make sure A phase is with A phase and B phase with B phase.
Generator inlets must be installed this minimum height above final grade.
What is 24 inches?
This NEC rule requires emergency feeders to be protected against fire damage.
What is NEC 700.10(D)(2)?
This NEC section requires emergency systems to transfer within 10 seconds.
What is NEC 700.12?
Priority #8 waits this long before power is restored with no delays.
What is 6 minutes and 45 seconds?
Reminder first load starts after 5 minutes and every other load attempts to start every 15 seconds.
This NEC requirement mandates that ATS equipment be suitable for the available fault current.
What is NEC 110.9?
The exception that allows the fume clearance to be reduced from 10 feet to 5 feet.
What is installing CO alarms in all required areas and the room closest to the opening?
This failure occurs when emergency and normal conductors are not separated at the ATS.
What is violation of NEC 700.10(B)?