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G0B - Electrical and RF Safety

General Class

Station grounding and bonding: lightning protection, electrical safety, grounding techniques for RF and AC safety

13 questions | Updated: Dec 9, 2025

All G0A G0B G1A G1B G1C G1D G1E G2A G2B G2C G2D G2E G3A G3B G3C G4A G4B G4C G4D G4E G5A G5B G5C G6A G6B G7A G7B G7C G8A G8B G8C G9A G9B G9C G9D
G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?
G0B02

According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?
G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
G0B04

Where should the station’s lightning protection ground system be located?
G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?
G0B06

Which of the following is covered by the National Electrical Code?
G0B07

Which of these choices should be observed when climbing a tower using a safety harness?
G0B08

What should be done before climbing a tower that supports electrically powered devices?
G0B09

Which of the following is true of an emergency generator installation?
G0B10

Which of the following is a danger from lead-tin solder?
G0B11

Which of the following is required for lightning protection ground rods?
G0B12

What is the purpose of a power supply interlock?
G0B13

Where should lightning arrestors be located?