P2B

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T X J V G Q G P L S R K N Q R H W B D C P
N G D R M B W A J E E M S H Q Q O R X R A
E I H O B O O W I I U L O W I W M O I I W
R B V T K O X D I L S X U S C O W W D H C
R I E A P W V I T P E E U S Y L U N U O K
U G L L Y G T V D P A Y C U B L U Q K H Y
C P M U C Y R X I U B R F U D E N L I P H
G W F S B X E P R S L R M V W Y O N E L I
N J U N U U R C E Y E X W Y C D Y B S H V
I M F I L T M G C T E S T D I N P C D B F
T L N B X L Y N T I Q W V A D A E Y W A J
A K M S O Q X B C C C N G F Y N K N C U I
N O H R V C K O U I L H Q C O E M U M H V
R I M P L J Y L R R O H F H F E I R A B O
E C E R I O B X R T M A E E D R P R V Q I
T W L L C V O K E C J K A A T G B N G B C
L D T V L H J I N E K G Q P M H A V A Q M
A S S W X H D W T L K X X E M J A M L D M
P K W D R E E Q D E H U B R R T R N Y B V
A C N G N J X G D W S G O O U Q A E P L E
Y D S E E V G F J U D X T W F U B J B K H

Clues

  • An oscilloscope measures... (11, 8)
  • Battery electricity is... (6, 7)
  • Earth wire is... (5, 3, 6)
  • Live wire is... (5)
  • Mains electricity is... (11, 7)
  • Neutral wire is... (4)
  • What does the fuse do if the current is to large? (5)
  • Why are circuit breakers better than fuses? (9)
  • Why are fuses better than circuit breakers? (7)
  • Why are the wires in a plug encased in plastic? (9)

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