“An electrician arrives home at 3 a.m. His wife asks him, ‘Wire you insulate?’”

There are many electrician puns. A “Wire you insulate?” joke has been cited in print since at least 1890.
   
   
21 July 1890, Buffalo (NY) Courier, pg. 5, col. 1:
Said the electrician’s wife when he arrived home from lodge: “Wire you coming insulate nights?”
       
18 June 1910, The Daily Province (Vancouver, BC), pg, 6, col. 4:
Electrical.
Watt-Hour you doing there? asked the boss.
 
“Eatin’ currants,” replied the apprentice, shamefacedly. “Anode you’d catch me at it.”
 
“Wire you insulate this morning, anyway?” demanded the boss.
 
“Leyden bed.”
 
“Wouldn’t that jar you! Can’t your relay-shunts get you up mornings?”
 
“Amperently not.”
 
“Fuse going to do that every day you can take your hat and go ohm,” replied the boss, and the circuit was broken right there.
   
15 April 1914, Santa Fe (NM)

, pg. 2, col. 3:
“WIRE YOU insulate?” the electrician’s wife inquired when he made his appearance at 3 G. M. Whereupon he explained that he had become thirsty and had to make a short circuit.
 
Google Groups: rec.ham-radio
John Sculley (Was Wayne Green, state of ham radio, etc.)
Phil R. Karn
7/18/90
(...)
I assume you mean their contest for the best reason why the applicant should receive a free soldering iron. To this day I remember two of the winning entries. One wanted to solder a resistor to his kitchen stove.  (“I always wanted to have an ohm on the range.”)  I think the other wanted to do something to his wife. She kept asking “Wire you insulate?” when he’d get home at night…
   
Google Groups: alt.humor.puns
Carousing husband
Elizabeth
11/18/98
An electrician finally arrived at his house at 2 AM. His wife was waiting and said, “Wire you insulate?” The reply was, “Watts it to you? I’m ohm, ain’t I?”
 
Google Groups: alt.humor.puns
Puns of the Weak 8/3/01
Stan Kegel
8/3/01
(...)
An electrician finally arrived at his house at 2 a.m. His wife was waiting and said “Wire you insulate?” The reply was “Watts it to you, I’m ohm ain’t I?” (Don Wagner)
 
Twitter
Tim Cherepko
@TENroaches
One time an electrician came home drunk at 4am. “Wire you insulate?” his wife scolded.
“Watts it to you?” he snapped. “I’m ohm, ain’t I?”
1:50 PM · Jan 18, 2010·Twitter Web Client
   
Reddit—Jokes
Posted by u/Sunnyvale_Selects July 28, 2016
An electrician comes home at 2 am….
His wife asks, “wire you insulate?”
He replies, “watt’s the problem, I’m ohm aren’t I?”
 
Twitter
ElectricityNorthWest
@ElectricityNW
This electrician arrives home at 3am.
His wife asks him, “Wire you insulate?”
He replies, “Watt’s it to you? I’m Ohm, aren’t I?”
😜
3:37 AM · Nov 23, 2018·AgoraPulse Manager
   
Reddit—Jokes
Posted by u/TharunPrakash August 15, 2019
An electrician comes home late
Wife: “Wire you insulate?”
Electrician: “Watts it to you, I’m ohm ain’t I?”
 
Twitter
🤣 The Dad Joke Man 😉
@DadJokeMan
An electrician arrives home at 3am.
His wife asks him, “Wire you insulate?”
He replies, “Watt’s it to you? I’m Ohm, aren’t I?”
It’s a current joke, although it’s shocking…😜
11:27 AM · Sep 10, 2019·Twitter for iPhone