Fairly common in houses built before 1930, the system uses porcelain insulators (knobs) for running wires through unobstructed spaces.
Porcelain tubes protect wires that run through studs and joists.
The newer systems provide retrofit moldings that fit the new components’ holes where your old system is installed.
How To Determine How Many Wires Are In Your Old Nu Tone System: Before you can order an intercom replacement, you need to determine how many wires are used in your existing intercom system.
When additional branches or fixtures are added, the fuses protecting the old circuits are likely to blow frequently.
Installing larger fuses is an easy, but unsafe, solution.
Do you have an old Nu Tone IM or IMA series intercom system in your home that has stopped functioning properly? Old Nu Tone and M&S intercom systems can almost never be replaced piece by piece.
Has one of your room stations on your M&S System intercom gone bad or has the master station begun to malfunction? These manufacturers do not manufacturer replacement parts for their older models, and the newer systems are not backwards compatible.Some of the safety features of the system are: Improper alterations Improper alterations are the most consistent problem I find with knob and tube wiring, and they pose a significant safety hazard.Unfortunately from a safety standpoint, the electrical system is one of the few things in a home that can be installed completely wrong and still Additional branches improperly added to the original wiring is one of the common problems I see.A home renovation is the right time to install additional outlets in each wall.Families have different needs for extra outlets, such as: A home office with some computers and printers Older kids’ rooms with televisions and video games Outdoor spaces Kitchens with new gadgets or appliances If you find yourself using multiple power strips and extension cords for your everyday tasks then it’s time to get an electrical upgrade.Because much of your electrical system is concealed behind the walls, it can be easy to overlook when planning a remodel.