Cryptic crossword clue
Electrical device more inactive without volts 8

The most common and most likely answer to this crossword clue is the 8 letter word INVERTER

I've seen this crossword clue in The Daily Telegraph
I
N
V
E
R
T
E
R

Buddy explains!

The straight part
We know that "Electrical device" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case electrical device = inverter.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does INVERTER mean?

INVERTER noun
  1. Something that inverts, or causes inversion
  2. A power inverter

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