Try:
Watts, Arthur S. 1939 Early History of the Electric Porcelain Industry
in the United States. Bulletin of the American Ceramic Society
18(8):404-408
Wright, A. and P.G. Newbury 1982 Electric Fuses. Peter Peregrinus Ltd.,
London
Schroder, Fred E.H. 1986 More Small Things Forgotten: Domestic Electric
Plugs and Receptacles, 1881-1931. Technology and Culture 27(3):525-543

I have also had good luck with general descriptive artifact references
like
Hull-Walski, Deborah A and James A. Ayres 1989 Historical archaeology of
Dam Construction Camps in Central Arizona, Vilume 3: Laboratory Methods
and Data Computerization. Report prepared by Dames and Moore for the
U.S. Bureau of Reclamation.

Good luck,
Catherine Williams
Northern Land Use Research