2.0601.1 Knob and Tube Wiring

Topic: 
Electrical
Subtopic: 
Knob and Tube Wiring
Desired Outcome: 
Live unsafe wiring identified and brought to local codes
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Calculation of the Infiltration Credit and Referenced Standards.
TitleSpecification(s)Objective(s)
2.0601.1a
Knob and tube identification

Contractor, assessor, auditor, or similar will inspect and assess the house to identify knob and tube wiring

Ensure occupant safety

Preserve the integrity and safety of the house
2.0601.1b
Live wire testing

Non-contact testing method will be used to determine if wiring is live

Protect occupant safety

Preserve the integrity and safety of the house
2.0601.1c
Isolation and protection

See redline change(s)

Live knob and tube will not be covered or surrounded; required by the National Electrical Code ( NEC NEC National Electrical Code ) or authority having jurisdiction

A licensed electrical contractor will inspect and certify wiring to be safe and place a warning at all entries to the attic about the presence of knob and tube wiring

A dam that does not cover the top will be created to separate insulation from the wire path

Ensure occupant safety

Preserve the integrity and safety of the house
2.0601.1d
Replacement

Exposed wiring will be replaced with new appropriate wiring in accordance with the NEC NEC National Electrical Code and local codes

Old wiring will be rendered inoperable by licensed electrician in accordance with the NEC NEC National Electrical Code and local codes

Ensure occupant safety

Preserve the integrity and safety of the house