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Busbar Ampacity Table 1

Busbar Design Table 2

Busbar Emissivity Table 3

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Sheila Stone
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240 Industrial Drive,
Decatur, TN 37322
1-800-394-4804
FAX 423-334-3389
email: busbar@stormcopper.com

Laminated Busbar Ampacity

Table 4 - Design Considerations of Laminated Copper Bus Bar

Current Requirement at 30 Cº Rise	Required Cross Sectional Area (sq. in.)	Standard Conductor Thicknesses (in)	Calculated Conductor Width (in)	Resistivity Ohms/Inch at 20 C	Inductance Ohms/Inch
I	A	T	W	R	L (Length)

50	0.016	0.020	0.806	0.042	0.198
50	0.016	0.040	0.403	0.042	0.396
50	0.016	0.062	0.260	0.042	0.613
50	0.016	0.093	0.173	0.042	0.921
50	0.016	0.125	0.129	0.042	1.236

100	0.032	0.020	1.613	0.021	0.099
100	0.032	0.040	0.806	0.021	0.198
100	0.032	0.062	0.520	0.021	0.307
100	0.032	0.093	0.347	0.021	0.460
100	0.032	0.125	0.258	0.021	0.618

150	0.048	0.020	2.419	0.014	0.066
150	0.048	0.040	1.209	0.014	0.132
150	0.048	0.062	0.780	0.014	0.204
150	0.048	0.093	0.520	0.014	0.307
150	0.048	0.125	0.387	0.014	0.412
150	0.048	0.187	0.265	0.014	0.617

200	0.065	0.020	3.225	0.010	0.049
200	0.065	0.040	1.613	0.010	0.099
200	0.065	0.062	1.040	0.010	0.153
200	0.065	0.093	0.694	0.010	0.230
200	0.065	0.125	0.516	0.010	0.309
200	0.065	0.187	0.345	0.010	0.462

250	0.081	0.020	4.031	0.008	0.040
250	0.081	0.040	2.016	0.008	0.079
250	0.081	0.062	1.300	0.008	0.123
250	0.081	0.093	0.867	0.008	0.184
250	0.081	0.125	0.645	0.008	0.247
250	0.081	0.187	0.431	0.008	0.370

300	0.097	0.020	4.838	0.007	0.033
300	0.097	0.040	2.419	0.007	0.066
300	0.097	0.062	1.560	0.007	0.102
300	0.097	0.093	1.040	0.007	0.153
300	0.097	0.125	0.774	0.007	0.206
300	0.097	0.187	0.517	0.007	0.308

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