The wire fixtures shown are the old style, non-insulated, bare wire type that depended on the physical separation of the two current carrying wires to prevent short circuits. Prior to the 1930s, asbestos was the only durably and flexible insulating covering and it was expensive so instead, most just used bare wire put up out of the way. Usually you would find each wire ran down opposite sides of a joist.
Fill in your details below or click an icon to log in:
You are commenting using your WordPress.com account. ( Log Out / Change )
You are commenting using your Twitter account. ( Log Out / Change )
You are commenting using your Facebook account. ( Log Out / Change )
You are commenting using your Google+ account. ( Log Out / Change )
Connecting to %s
Notify me of new comments via email.
Notify me of new posts via email.
Get every new post delivered to your Inbox.
Join 1,401 other followers