American Access Systems ProAccess 200sa - Manual (Page 33)

SK-ACP Installation & Operating Manual
F-2
Grounding the Surge Protector
Surge protectors must be connected to a verified good, nearby earth ground. This can be AC Power
Ground, a 10' Copper Ground Stake, or Building Ground. Run 16 AWG or heavier wire as short a distance
as possible, and avoid any bends in the wire.
Self-grounding Surge Protectors
Do not use surge protectors unless they are equipped with a separate ground wire or ground
screw. Self-grounding Surge Protectors use the connector shell or Pin 1 as a ground path; however, the
shell and Pin 1 are not always grounded.
AC Power Surge Protectors
AC Power Surge Protectors must be plugged into a properly grounded 3-wire socket. If a 3-wire
socket is not available, have one installed by an electrician; do not use a 2-prong socket by cutting off the
3rd prong on the plug, or by using a 3/2 converter, or the surge protector will be rendered useless.
Terminating Cable Shields
Connect cable shields on data cables at one end only. You may terminate the cable shield to the same
ground as the surge protector. Leave the cable shield unconnected at the opposite end.
Grounding the Access Control Unit
At the Access Control Unit, connect the Green Ground Screw on the mounting plate to a good earth
ground, to allow the built-in surge protection to work properly.
Surge Protectors
There are many manufacturers of surge protectors. Some are designed to protect a single type of circuit
such as high voltage AC, low voltage DC or telephone lines. Secura Key offers two multi-function surge
suppressors that are well-suited to protecting access control equipment. The DTK-XR is a good choice for
protecting an SK-ACP panel from power, data and telephone line surges. If the card readers or keypads
attached to the SK-ACP are located outdoors you may also wish to install DTK-CR protectors on each
reader circuit.