TB 8 Flashcards
TB8 what voltage are street lights powered with?
120 to 6150
TB8 ___ amps of electricity going through the body for just ___ seconds is enough to cause death
- 1/10
- 2 seconds
TB8 what best describes
-voltage
-amps
-ohms
Voltage - push (psi)
Amps - flow (gpm)
Ohms - resistance (friction lost)
TB8 when spotting app. Around affected power poles, spot at least ____ away
Two poles
TB8 what is the range of voltage
-extremely high
- high
-low
Extreme - excess of 60,000
High - 600- 59,999
Low - below 600
TB8 when directing hose streams on a power pole, what is the rule
30/33/100
30 degree fog
33 feet away
100 psi min.
TB8 according to NIOSH & OSHA, over ____ deaths occur from electrical
700 deaths
TB8 over ____ electrocutions, wires down, & electrical incidents occur annually in LOS ANGELES CITY?
3,000
TB8 cross arms carry voltage signs that stats
High voltage 750 volts
TB8 the danger of high-voltage capacitors is they have been know to retain a deadly electrical charge even ___ after the power has been shut down
Weeks
TB8 DWP primary distribution lines are usually ___ KV
4.8
TB8 electrical current is movement of?
Charge
TB8 there are 2 main components of the electrical transport system?
Grids & transmission lines
TB8 transmission insulators can be __ to __ feet long
3-20 feet