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Using power strips with separate circuit breakers does not add additional
protection and may cause unwanted power interruption. Ensure that all
power strips use at least #16 AWG (the best choice is #14 AWG or larger)
with ground.
Do not use surge/transient suppressors without careful and
!
expert power system analysis. Most surge/transient
suppressors can cause system damage from transients if used
Caution
in the typical manner.
All branch circuits must have a "third wire" type ground for the branch
circuit that only goes to the circuit breaker panel. Conduit ground is
unacceptable for any portion of the system.
Blinking lights or fluctuating intensity from lighting at the computer site
indicate poor power. This may be a cause of system "hangups." Check the
electrical installation to ensure proper system operation.
Power Circuit Protection
Protect the power circuit with an electrical line filter that prevents voltage
spikes from reaching the system.
Circuit Breakers and Receptacles
Make sure circuit breakers furnishing power to the system are the correct
size to protect the system. Make sure all receptacles are wired for three-
wire power distribution (line, neutral and ground).
All power receptacles servicing any equipment that is directly cable-
connected to the system must have a single, common grounding point. The
ground wire must be at true ground potential with a resistance (measured
at the power panel bus) of five ohms or less between the bus bar and earth.
The ground wire is the "third wire" type (not conduit ground).
http://www.motorola.com/computer/literature
Preparing the Site for Installation
2
2-5
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