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3.3 This NAPA Digital Wheel Charger is for use on a nominal 120-volt circuit and has a grounding
plug that looks like the plug illustrated below (A). A temporary adapter, which looks like the adapt-
er illustrated in (B) and (C), may be used to connect this plug to a two-pole receptacle as shown in
(B), if a properly grounded outlet is not available. The temporary adapter should be used only until
properly grounded outlet can be installed by a qualied electrician.
DANGER: BEFORE USING ADAPTER AS ILLUSTRATED, BE CERTAIN THAT CENTER
SCREW OF OUTLET PLATE IS GROUNDED. The green-colored rigid ear or lug extending from
adapter must be connected to a properly grounded outlet: make certain it is grounded. If neces-
sary, replace original outlet cover plate screw with a longer screw that will secure adapter ear or
lug to cover plate and make ground connection to grounded outlet.
USE OF AN ADAPTER IS NOT ALLOWED IN CANADA. IF A GROUNDING-TYPE RECEPTACLE
IS NOT AVAILABLE, DO NOT USE THIS CHARGER UNTIL THE PROPER OUTLET IS INSTALLED
BY A QUALIFIED ELECTRICIAN.
3.4 An extension cord should not be used unless absolutely necessary. Use of improper extension
cord could result in a risk of re and electric shock. If extension cord must be used, make sure:
a. that pins on plugs of extension cord are the same number, size, and shape as those of plug
on the NAPA Digital Wheel Charger;
b. that extension cord is properly wired and in good electrical condition;
c. that wire size is large enough for AC ampere rating of charger as specied in the following
table.
Recommended minimum AWG* size for
extension cords for battery chargers
AC input rating, amperes AWG size of cord
Equal to or
greater than:
But less than: Length of cord, in feet (meters)
25 (7.6) 50 (15.2) 100 (30.5) 150 (45.6)
12 14 16 12 10 8
*American Wire Gauge