Miller Electric 280 NT, Owner'S Manual

Page: 36 / 60

A complete Parts List is available at www.MillerWelds.com
OM-4430 Page 32
7-3. Wiring Instructions For Optional 240 Volt, Single-Phase Plug (NEMA 14-50P)
plug1 11/03 − 120 813-D
The plug can be wired for a 240 V,
2-wire load or a 120/240V, 3-wire
load. See circuit diagram.
1
Plug Wired for 120/240 V,
3-Wire Load
When wired for 120 V loads, each
duplex receptacle shares a load
with one half of 240 V receptacle.
2
Plug Wired for 240 V, 2-Wire
Load
3 Neutral (Silver) Terminal
4 Load 1 (Brass)Terminal
5 Load 2 (Brass) Terminal
6 Ground (Green) Terminal
7 Amperes Available using
120/240 V Plug
1
2
3
4
5 6
3
4
5
6
240V
240V
120V
120V
Tools Needed:
240 V AC
120 V AC 120 V AC
7
*One 240 V load or two 120 V loads.
Current Available in Amperes
240 V
Receptacle*
Each 120 V Duplex
Receptacle
V x A = Watts
20
15
10
5
0
0
5
10
15
20