Probable Effect Concentration Quotients (PECQS) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Probable Effect Concentration Quotients Test with targeted questions. Utilize flashcards and multiple choice formats, complete with hints and explanations. Get set for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

The size of bonding jumper conductor for systems supplying Class I - III circuits derived from a transformer rated not more than 1 kV shall not be smaller than what size for copper?

1.5 sq mm
2.0 sq mm
3.0 sq mm
4.0 sq mm

The correct answer is: 2.0 sq mm

The correct answer is based on the National Electrical Code (NEC) requirements that specify the minimum sizes of bonding jumpers for various applications. When dealing with systems supplying Class I - III circuits derived from a transformer rated at not more than 1 kV, the NEC indicates that the bonding jumper conductor must be appropriately sized to ensure the safe and reliable operation of the electrical system. In this context, the minimum size for a copper bonding jumper in these types of systems is established at 2.0 square millimeters. This size is enough to handle potential fault currents effectively while ensuring adequate conductivity and minimizing voltage drop. Choosing a size smaller than 2.0 square millimeters could compromise the safety and efficacy of the bonding system, possibly resulting in inadequate performance during fault conditions. Therefore, maintaining a minimum conductor size of 2.0 square millimeters is critical for ensuring compliance with electrical standards and promoting the overall safety of the electrical installation.