ELECTRICAL INSTALLATION, WIRING AND TROUBLESHOOTING
Nederman Customer Service & Technical Support [email protected]
+1 (336) 821-0800
4
Section 2.0 – Circuit Sizing
1
Techtop motor nameplate full
‐
load amps (Used for setting overload only).
2
Minimum size based on 75
ᵒ
C (167
ᵒ
F) insulation and copper wire, such as RHW, THHW, THW, THWN, XHHW,
XHWN,USE, ZW. Verify with table 310.16. Conductor size may need to be increased based on wire type, length
and/or run.
3
Branch circuit protection to be sized at 250% of motor FLC for (Inverse Time) circuit breaker based on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best
‐
practice.
4
Branch circuit protection to be sized at 175% motor FLC for Dual Element (Time
‐
Delay) Fuse based on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best
‐
practice.
5
Branch circuit protection to be sized at 300% motor FLC for Nontime
‐
Delay fuse (Class CC fuses) on tables
430.52, 430.248, and 430.250. Based on 2020 NEC 70 Article 430 and best
‐
practice.
6
Recommended setting for overload on Nederman Push Button Starters based on motor nameplate multiplied by
service factor.
7
Wire
‐
nuts or soldering are
NOT
acceptable means to connect motor leads per NFPA 79, 13.5.9. Use appropriate
components to make motor connections such as split bolts, crimp
‐
connections and eye
‐
bolts.
8
It is the responsibility of the end
‐
user to follow State and Local Codes. This chart is provided as a helpful
resource only. Use
of a qualified and licensed industrial electrician is required for proper installation.
TABLE 2 - 3-Phase S-Filter Circuit Sizing Table
8
Service Factor 1.0
Motor FLA
1
Conductor Size
2,7
Inverse Time
Breaker Size
3
Time
‐
Delay
Fuse
4
Non Time
‐
Delay
5
O/L Setting
6
S
‐
500
208V
13.2
A
10
AWG
45
A
30
A
50
A
17
A
230V
12.4
A
12
AWG
40
A
30
A
50
A
16
A
460V
6.18
A
12
AWG
20
A
15
A
25
A
8
A
575V
4.94
A
12
AWG
20
A
15
A
20
A
6
A
S
‐
750
208V
19.2
A
10
AWG
70
A
45
A
80
A
24
A
230V
17.7
A
10
AWG
60
A
40
A
70
A
22
A
460V
8.6
A
12
AWG
30
A
20
A
35
A
11
A
575V
7.08
A
12
AWG
25
A
20
A
30
A
9
A
S
‐
1000
208V
26.3
A
8
AWG
80
A
60
A
100
A
33
A
230V
23.9
A
8
AWG
70
A
50
A
90
A
30
A
460V
12
A
12
AWG
35
A
25
A
45
A
15
A
575V
9.55
A
12
AWG
30
A
20
A
30
A
12
A
