Skip to content
You are here > Home > Your Ministry > Ontario Building Code > Appeals & Approvals > Building Code Commission > Rulings of the Building Code Commission > 1993 > BCC Ruling No. 93-4-360

Follow us

BCC Ruling No. 93-4-360

Email this page


IN THE MATTER OF BUT NOT LIMITED TO: Ontario Building Code, O/Reg. 413/90 as amended

PARTS, Electro Magnetic Locks


In favour of the Applicant.

Regarding Bank of Canada, Toronto Agency Operation Centre, 5990 Explorer Drive, Mississauga, Ontario.

It is the decision of the Building Code Commission that the requirements of the Code are met in the matter of electromagnetic locking devices that conform to the Code and providing there is compliance to the following:

    1. All electromagnetic locking devices shall be designed and installed to operate as per the requirements of "Lighting and Emergency Power Supply" of the Code, and

    2. the electromagnetic locking devices shall fail safe open on a failure of the primary building power supply, the emergency building power supply and the emergency power to the fire alarm panel where provided, and

    3. can only be reset manually or remotely by authorized personnel, and

    1. U.L.C. Standards require that the fire alarm system continue to detect alarm conditions and operate normally under a single ground fault condition such as the common trouble circuits, and

    2. if the electromagnetic locking devices have been designed to immediately release only if there is a double ground fault on the fire alarm detection circuit equivalent to the operation of detection device that would cause the fire alarm system to activate, this design will be considered to have sufficiency of compliance.

  1. The manual station for the fire alarm system located on the wall not more than 600mm (23 5/8 in.) from the door, shall be so installed that in addition to activating the fire alarm system, this pull station shall release the electromagnetic locking device on the adjacent door, and

  2. where there is a "two stage single or multi zone" fire alarm system locking devices need not be released on the first stage "alert", from the two stage fire alarm system, and

  3. where there is a "two stage single or multi zone" fire alarm system locking devices within and those leading from the zone of activation to the exit(s) shall release immediately on the second stage "alarm" of the two stage fire alarm system, and

  4. authorized personnel shall be able to release the locking devices on any door(s) from a location within or adjacent to the zone of activation by a manually operated switch.


  1. Highly trained security personnel will be constantly on duty to investigate any first stage alarm.

  2. This building is a highly secured building not open to the public.


That the Ontario Buildings Branch assemble a meeting of all concerned parties to review and amend the Code requirements for all electromagnetic locking devices.