Voltage Drop in Electric Extension Cords

VOLTAGE DROP IN ELECTRIC EXTENSION CORDS

When a long electric extension cord is used to connect an appliance or tool to the generator, a certain amount of voltage drop or loss occurs in the extension cord which recuces the effective voltage available for the appliance or tool. The use of improper size or gauge of extension cords may cause unsafe or inefficient operation of your tool or appliance. it may also damage the tool or appliance.

Be sure that any extension cord that you use is rated to allow sufficient current flow to the motor or appliance. Select the required wire gauge size according to the chart below.

Chart lists the minimum wire gauge size for the proper extension cord.

EXTENSION CORD CHART

Use the right extension cord. An extension cord should have a suitable wire size for the overrall cord length and tool amperage rating. This is to prevent a serious voltage drop, power loss and possible motor damage. Generally, heavier gauge wire is required as coad lenght increases. Use the recommendations in this table.

Extension	0.2	2.1 - 3.4		3.5- 5		5.1 - 7		7.1-12	12.1-16
Cord	0.2	2.1 - 3.4		3.5- 5		5.1 - 7		7.1-12	12.1-16
Length
25 feet	18	18		18		18		16	14
50 feet	18	18		18		16		14	12
75 feet	18	18	I	16	I	14	I	12	10
100 feet	18	16	I	14	I	12	I	10
150 feet	16	14		12
200 feet	16	14		12
300 feet	14	12		10
400 feet	12
500 feet	12
600 feet	10
800 feet	-
800 feet	10
aNot normally available as flexible extenslon cord

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