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79-0030-001 11 January 2001
X-C 6250 Pro (300) NT Users Manual
Quality of Electrical Wiring and Service
Wiring should be up to current NEC standards and have verified good
AC grounds. It is important that your computer system be plugged into
a grounded AC outlet when charging and that all peripherals connected
to your system reference the same AC ground.
Selecting the Right Equipment
There are a number of companies that sell quality surge suppressors
such as Sutton Designs, APC, and Panamax. When you are looking for
a surge suppressor, consider these things.
•
Expect to pay at least $50 for a good quality surge suppressor.
•
The surge suppressor should be a UL 1449, 497, and 1283 listed
for surge suppression, modem surge protection, and RFI/EMI noise
filtering respectively.
•
The surge suppressor should have diagnostic LEDs that verify good
AC ground, proper wiring, and proper surge operation. Lighted on/off
switches are not recommended since they can produce electrical
noise.
•
The Joule ratings should be a minimum of 480 Joules for the AC
surge circuit.
•
The Joule ratings should be a minimum of 240 Joules for the
modem.
•
The modem surge circuit should present low capacitance to the
modem line or it will slow the transmission rate. Capacitance should
be specified at less than 50 picofarads.
•
Quality surge suppressor manufacturers generally offer a lifetime
warranty.
•
Consider obtaining a protected equipment coverage policy which
insures the equipment in the event of surge damage.
•
The devices that will be attached to the computer also need to be
surge protected.
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